Multiaqua Catalog Full Catalog - API of NH

Table of Contents (Hydronic)About UsSystem Modeling SoftwareMulti-Zoning and Energy CostFeatures and BenefitsWater Products OverviewDX Products OverviewAccessory Products OverviewEquipment Sound DataMAC120 Air-Cooled ChillerNomenclature BreakdownGuide SpecificationsProduct SpecificationsCapacitiesInstallation and Operating ManualWiring DiagramsCertified DrawingMAC036,048 and 060 Air Cooled ChillerNomenclature BreakdownGuide SpecificationsProduct SpecificationsCapacitiesCirculating Pump CurveInstallation and Operating ManualWiring DiagramsCertified DrawingMHCCW (Ceiling Concealed) 2-pipe Chilled Water with Electric Heat. 1 to 3 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsChilled Water CapacitiesHot Water CapacitiesElectric Heat CapacitiesCFM and Glycol AdjustmentsCapacity Adjustment FactorsInstallation and Operating ManualWiring DiagramsCertified DrawingMHNCCW (Ceiling Concealed) 4-Pipe Chilled and Hot Water. 1 to 3 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsChilled Water CapacitiesHot Water CapacitiesCFM and Glycol AdjustmentsCapacity Adjustment FactorsInstallation and Operating ManualWiring DiagramsCertified DrawingPage1234567891011131517344344454648505657748384858688899499100101102113116117118119121122127132133134145147

Table of Contents (Hydronic Continued)MCCW (Ceiling Concealed) 2-Pipe Chilled and Hot Water. 4 to 5 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsChilled Water CapacitiesHot Water CapacitiesCFM and Glycol AdjustmentsCapacity Adjustment FactorsInstallation and Operating ManualWiring DiagramsCertified DrawingMHWW (Hi-Wall) 2-Pipe Chilled and Hot Water. 1 to 3 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsChilled Water CapacitiesHot Water CapacitiesCapacity and Glycol Adjustment FactorsInstallation and Operating ManualWiring DiagramsCertified DrawingCFFWA (Universal Mount) 2-Pipe Chilled and Hot Water. 1 to 5 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsChilled Water CapacitiesHot Water CapacitiesCapacity and Glycol Adjustment FactorsInstallation and Operating ManualWiring DiagramsCertified DrawingCWA2 (Air Handler) 2-pipe Chilled Water with Electric Heat. 1.5 to 5 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsChilled Water CapacitiesHot Water CapacitiesCFM and Glycol AdjustmentsCapacity Adjustment FactorsInstallation and Operating ManualWiring DiagramsCertified DrawingCWA4 (Air Handler) 4-pipe Chilled and Hot Water 2 to 5 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsChilled Water CapacitiesHot Water CapacitiesCFM and Glycol AdjustmentsCapacity Adjustment FactorsInstallation and Operating ManualWiring DiagramsCertified DrawingPage148149150152153155157157158169170171172173175176181186187202206207208209211212218224225231232233234235237238243246247249257258259260261263264268269270271279280

Table of Contents (Direct Expansion)MHCCX (Ceiling Concealed) DX with Electric Heat. 1 to 3 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsCapacitiesCFM AdjustmentsInstallation and Operating ManualWiring DiagramsCertified DrawingMCCX (Ceiling Concealed) DX Only. 4 to 5 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsCapacitiesCFM AdjustmentsInstallation and Operating ManualWiring DiagramsCertified DrawingMHNCCX (Ceiling Concealed) DX with Hot Water. 1 to 3 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsDX CapacitiesCFM AdjustmentsGlycol AdjustmentsCapacity Adjustment FactorsHot Water CapacitiesInstallation and Operating ManualWiring DiagramsCertified DrawingMHWX (Hi-Wall) DX Only. 1 to 3 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsCapacitiesInstallation and Operating ManualWiring DiagramsCertified DrawingFSFCA (Universal Mount) DX Only. 1 to 5 TonsNomenclature BreakdownGuide SpecificationsProduct SpecificationsCapacitiesInstallation and Operating ManualWiring DiagramsCertified DrawingPage281282283285287288289300304305306307309309309310316317318319320322323323323324325330341343344345346348348349363371372373374376376377383384

Table of Contents (Accessories)AccessoriesStorage TanksExpansion Tank and Air ScoopLiquid Solution Bypass ValveLiquid Solution Control ValvesCondensate PumpControl ThermostatsWye StrainerCirculating Pumps (1,1.5 & 2 HP)Circulating Pump Curve (1,1.5 & 2 HP)Circulating Pumps (.5 HP)Circulating Pump Curve (.5 HP)Ceiling Concealed EnclosuresSample PipingBanked Chiller ConfigurationWarranty InformationPage385387388389391392395396397398399400407408409

About UsSetting new industry standards is what we do best.At Multiaqua, our commitment to creating innovative air conditioning products has made us oneof the most respected organizations in the industry. From concept to market, Multiaqua takes ahands-on approach to ensure that each and every step meets our stringent standards of quality,durability and dependability.All Multiaqua products are designed with the future in mind. That’s why all air conditioningproducts are flexible, which makes it easy to adapt to virtually all kinds of building applications.Whether it’s residential or commercial air conditioning needs, Multiaqua has the products tomeet or exceed all expectations.Manufacturing ExcellenceOur beliefs in quality is more than just a practice, it is something we take great pride in. Ourquality management system is integrated with international quality requirements of ISO 9002.That is why some of the biggest OEM names in the air conditioning industry use Multiaquaproducts in their units. In fact, Multiaqua chillers were part of air conditioning system that wonfirst place awards in the Quality Home Comfort Awards Competition, which was created tohonor the best in residential comfort system design and application.Our products are tested and certified to the UL, CE, ETL, UL1995 and ARI standards; the mostrespected and stringent in the world.Experience The FutureAt Multiaqua, we invite you to come experience the future of air conditioning and see why moreand more companies are discovering the new standard of air conditioning excellence. And bycombining cost effectiveness, innovation and quality, Multiaqua will continue to provide airconditioning products that will be the most sought after in the world.1

Multiaqua Makes Hydronic System Design EasyNAME: MULTIAQUALOCATION: SOUTH CAROLINA36000 BTU/H7.6 GPM24000 BTU/H5 GPM24000 BTU/H5 GPM24000 BTU/H4.9 GPM30000 BTU/H6.3 GPM36000 BTU/H7.6 GPMICL-2ICL-3ICL-4ICL-5ICL-6ICL-745°F55°F 45°F55°F 45°F55°F1"45°F1"55.4°F45°F55°F45°F55°F60000 BTU/H12.6 GPM55°F145'1" 1" 1"145'145'1"5'5'1"5'1"1.5"1'5' 1.25"5'1.25"1.25" 5'1' 1.5"5' 1.25"ICL-145°F100' 1.25"1.25"145'1.25"1.25"1.25"1.5"145'1.5"55°F117000 BTU/H9.8 TONS24.5 GPM(50%)1.25"100'1.5"1.5"145'2"49 GPM66.7 FT2.5"0'10'1"BYPASS VALVE1'2.5"73.1 GALSTOR-1ET-111.5 GAL2.5"5'5'2"5' 2.5"5'2"0'1'2"45°F55°F45°FCH-2117000 BTU/H9.8 TONS24.5 GPM(50%)CH-1P-1Sample Design ShownIntroducing System Modeling SoftwareMultiaqua has teamed up with HVAC Solutions and would like to introduce the newest version of the HSSSoftware. This software will contain a selection model that includes Mutiaqua’s Air Cooled Chillers, Fan Coilsand Air Handling Units.HSS software will allow you to drag and drop components to design hydronic systems. It includes the necessarypiping, piping components and equipment. It is capable of exporting calculation reports, equipment schedulesand a bill of material. Visit www.multiaqua.com for software down load.2

Ductless and Ducted Hydronic Air Conditioning & Heating Systems.FOR MULTIZONING FACILITIES• Zoning saves energy• Better Control of Humidity• Separate Climate in each Room1. More Energy Efficient Thru Zoned Comfort Cooling.2. Zoning Allows For Diversity.3. Diversity and Load Calculations Allows For Reducing The Size of The OutdoorPower Plant.4. Banking Chillers Allows For Huge Efficiencies Thru Staging.5. Helps Control The Growth Of Mold, Mildew and Fungus.6. Low Installation Costs.7. No Refrigerant Handling.8. No Ductwork No Line Sets.9. Heat & Cool with the Same Units.10. No Line Length Limitations.11. Unlimited Tonnage with Single Phase Power.12. Easy To Expand System.Think Water !!!4

Water Product OverviewPage 44 Page 9MAC036, 048 & 060 Air Cooled Chiller• 3, 4 & 5 Ton Air Cooled Chiller• Copeland Scroll Compressor Technology• R 407c Refrigerant• Horizontal Air Discharge• Stainless Steel Pump IncludedMAC120 Air Cooled Chiller• 10 Ton Air Cooled Chiller• Copeland Scroll Compressor Technology• R 407c Refrigerant• Vertical Air Discharge• Two Stages of CoolingPage 84 Page 117MHCCW (Ceiling Concealed) Chilled Water 2-PipeWith or Without Electric Heat• 12,000- 36,000 BTUH• Available with or without Electric Heat• Ceiling Concealed Design for Clean Installation• Removes Equipment from Conditioned Space• Heavy Gauge Metal Cabinet• Powder Painted Galvanized Steel• Field Reversible Hand of Connection Coil• Manual Air Vents• Discharge May be Ducted for Small SpacesMHNCCW (Ceiling Concealed) Chilled/Hot Water 4-Pipe• 12,000-36,000 BTUH• Ceiling Concealed Design for Clean Installation• Removes Equipment from Conditioned Space• Heavy Gauge Metal Cabinet• Powder Painted Galvanized Steel• Double Field Reversible Hand of Connection Coil• Manual Air Vents• Discharge May be Ducted for Small SpacesPage 171 Page 148MHWW (Hi-Wall) Chilled/Hot Water 2-Pipe• 9,000- 36,000 BTUH• High Wall Mounting• Attractive Seamless Appliance Design• Cleanable Air Filter Provided• Wireless Infrared Remote Included• Wired Controller OptionMCCW (Ceiling Concealed) Chilled/Hot Water 2-Pipe• 48,000 – 60,000 BTUH• Ceiling Concealed Design for Clean Installation• Removes Equipment from Conditioned Space• Heavy Gauge Metal Cabinet• Powder Painted Galvanized Steel• Manual Air Vents• Discharge May be Ducted for Small SpacesPage 233Page 207Page 259CFFWA Universal Mount Fan Coil 2-Pipe• 12,000- 60,000 BTUH• Floor, Low Wall or Horizontal Ceiling Mounting• Attractive Modular Design• Cleanable Air Filter Included• Optional Wireless Remote5CWA2 With or Without Electric Heat 2-PipeCWA4 Chilled & Hot Water 4-Pipe• Available in 2 or 4-Pipe Configuration• 18,000- 60,000 BTUH• Up Flow, Left or Right Hand Horizontal Installation• Equipped with R4.2 Insulation• CWA2 in 208/240-1-60 & CWA4 in 120-1-60• Electric or Hot Water Heat

DX Product OverviewDX Fan Coils are Compatible with R410a Refrigerant and are 13 SEER CompatibleAll DX Coils come Shipped From the Factory with a TXV Installed.MHCCX (Ceiling Concealed) DX 2-PipeWith or Without Electric Heat• 12,000-36,000 BTUH• Available with or without Electric Heat• Ceiling Concealed Design for Clean Installation• Removes Equipment from Conditioned Space• Heavy Gauge Metal Cabinet• Powder Painted Galvanized Steel• Field Reversible Hand of Connection Coil• TXV Provided• Discharge May be Ducted for Small Places•13 SEER CompatibleMHNCCX (Ceiling Concealed) DX 4-Pipewith Hot Water• 12,000-36,000 BTUH• Ceiling Concealed Design for Clean Installation• Removes Equipment from Conditioned Space• Heavy Gauge Metal Cabinet• Powder Painted Galvanized Steel• Double Field Reversible Hand of Connection Coil• TXV Provided• Discharge May Be Ducted for Small Places• Hot Water Heating Coil•13 SEER CompatibleMCCX (Ceiling Concealed) DX• 48,000-60,000 BTUH• Ceiling Concealed Design for Clean Installation• Removes Equipment from Conditioned Space• Heavy Gauge Metal Cabinet• Powder Painted Galvanized Steel• TXV Provided• Discharge May be Ducted for Small SpacesFSFCA (Universal Mount) DX or Heat Pump• 12,000- 60,000 BTUH• Floor, Low Wall or Horizontal Ceiling Mounting• Attractive Modular Design• Cleanable Air Filter Included• Optional Wireless Remote• TXV Provided•13 SEER CompatibleMHWX (Hi-Wall) DX or Heat Pump• 9,000- 36,000 BTUH• High Wall Mounting• Attractive Seamless Appliance Desi• Cleanable Air Filter Provided• Wireless Infrared Remote Included• Wired Control Option6

Accessories OverviewPage 385 Page 387 Page 388Storage Tanks20 & 42 GallonExpansion Tank & Air ScoopLiquid Solution Bypass ValvePage 389 Page 395 Page 391Motorized Valves2 & 3-WayWye StrainerCondensate PumpPage 392 Page 396 Page 398ThermostatsCirculating PumpsEnclosures7

January 2008Multiaqua Equipment Sound LevelsThe following will detail the “Sound Levels” of the Multiaqua equipment line.Air Cooled ChillersMAC 036, 048, 060 Chillers: 69 dbs (A)MAC120 Chillers: 75 dbs (A)Hi-Wall Fan CoilsMHWX-09 / MHWW-09: DX and chilled water Hi-Wall fan coils: 42 dbs (A).MHWX-12 / MHWW-12: DX and chilled water Hi-Wall fan coils: 43 dbs (A).MHWX-18 / MHWW-18: DX and chilled water Hi-Wall fan coils: 45 dbs (A).MHWX-24 / MHWW-24: DX and chilled water Hi-Wall fan coils: 46 dbs (A).MHWX-36 / MHWW-36: DX and chilled water Hi-Wall fan coils: 48 dbs (A).Universal Mount Fan CoilsFSFCA-04 / CFFWA-04: DX and chilled water Universal Mount fan coils: 42 dbs (A).FSFCA-06, 08 / CFFWA-06, 08: DX and chilled water Universal Mount fan coils: 44 dbs (A).FSFCA-10 / CFFWA-10: DX and chilled water Universal Mount fan coils: 46 dbs (A).FSFCA-10, 12 / CFFWA-10, 12: DX and chilled water Universal Mount fan coils: 48 dbs (A).FSFCA-16, 20 / CFFWA-16, 20: DX and chilled water Universal Mount fan coils: 50 dbs (A).Hideaway Fan CoilsMHCCX-04 / MHCCW-04: DX / chilled water with electric heat Hideaway fan coils: 42 dbs (A)MHCCX-06 / MHCCW-06: DX / chilled water with electric heat Hideaway fan coils: 44 dbs (A)MHCCX-08 / MHCCW-08: DX / chilled water with electric heat Hideaway fan coils: 46 dbs (A)MHCCX-10 / MHCCW-10: DX / chilled water with electric heat Hideaway fan coils: 48 dbs (A)MHCCX-12 / MHCCW-12: DX / chilled water with electric heat Hideaway fan coils: 49 dbs (A)MHNCCX-04 / MHNCCW-04: DX / chilled water with hot water heat Hideaway fan coil: 40 dbs (A)MHNCCX-06 / MHNCCW-06: DX / chilled water with hot water heat Hideaway fan coil: 42 dbs (A)MHNCCX-08 / MHNCCW-08: DX / chilled water with hot water heat Hideaway fan coil: 44 dbs (A)MHNCCX-10 / MHNCCW-10: DX / chilled water with hot water heat Hideaway fan coil: 46 dbs (A)MHNCCX-12 / MHNCCW-12: DX / chilled water with hot water heat Hideaway fan coil: 48 dbs (A)MCCX-16 / MCCW-16: DX and chilled water Hideaway fan coil. 46 dbs (A)MCCX-20 / MCCW-20: DX and chilled water Hideaway fan coil. 46 dbs (A)Disclaimer: Specifications are subject to change without notice. All tests conducted in nonechoicchambers. Sound levels were measured at five feet from the unit. Levels were measuredusing free air delivery.8

MAC120 Air-Cooled ChillerAir-Cooled Chillers for Global Residentialand Light Commercial MicroClimates9

MAC120 NOMENCLATURE BREAKDOWNMAC120 - XX - X - R40710-TonAir-Cooled ChillerAccessoryOptionsN= No OptionsL= Low Ambient KitVoltage01 = 208/230-1-50/6002 = 208/230-3-50/6003 = 380/460-3-50/60Available Model NumbersMAC120-01-N-R407MAC120-01-L-R407MAC120-02-N-R407MAC120-02-L-R407MAC120-03-N-R407MAC120-03-L-R40710

HVAC Guide SpecificationsAir-Cooled Liquid ChillerNominal Size:10 TonsMultiaqua Model Number:MAC120-01-N-407, MAC120-01-L-407MAC120-02-N-407, MAC120-02-L-407MAC120-03-N-407, MAC120-03-L-407Part 1-General1.01 System DescriptionMultiaqua air-cooled liquid chillers are designed using scroll compressors and low sound condenser fans.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Construction shall comply with ASHRAE 15 Safety Code, NEC and ASME applicable codes. (U.S.A.Codes)C. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.D. ETL certified.E. Fully load tested at the factory.F. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested air-cooled liquid chiller.2. Shall be assembled on heavy gauge steel mounting/lifting rails.3. Contained within the unit cabinet shall be all factory wiring, piping, controls, refrigerant charge(R407c), POE oil and special accessories required prior to start up.4. Brass body strainer with 20 mesh screen and blow down shall be supplied in cabinet as afield installable accessory.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.2. Capable of withstanding 500-hour salt spray test in accordance with the ASTM (U.S.A.) standard.C. Condenser Fans:1. 4-blade, aluminum construction and shall be dynamically balanced and corrosion resistant.2. Discharge air at a 45° vertical angle.3. Motors and blades shall be protected by coated steel wire safety guards.D. Fan Motors:1. Condenser fan motors shall be single speed, direct drive.2. Totally enclosed.3. Permanently lubricated sleeve bearings and Class F insulation.4. Internal overload protection.E. Compressors:1. Unit shall contain two fully hermetic scroll compressors.2. Direct-drive, 3500 rpm (60Hz)3. Compressor motor shall be suction gas cooled.4. Internal motor protection.5. Externally protected by low and high pressure cutout devices.6. Individual vibration isolators.11

F. Pump:1. Unit shall be capable of incorporating a field installed chilled liquid solution pump.(Space restricted)2. Unit shall have provisions to allow for chilled liquid solution piping to the exterior of the cabinet.G. Evaporator:1. Evaporator shall have two independent refrigerant circuits.2. Rated for a refrigerant side working pressure of 450 psig and a maximum water side workingpressure of 60 psig.3. Single pass, ANSI type 316 stainless steel, brazed plate construction.4. Externally insulated with closed cell, elastomeric foam. (ASTM518)H. Condenser:1. Condenser coil shall be air-cooled with integral subcooler.2. Two independent refrigerant circuits.3. Constructed of rifled copper tubing mechanically bonded to aluminum fins.4. Cleaned and dehydrated.5. Factory leak tested to 450 psig.I. Refrigerant Circuits:1. Each circuit shall contain a sight glass, liquid line filter, thermal expansion valve,refrigerant charge of R407c and POE compressor oil.Part 3-Controls and Safeties3.01 ControlsA. Chiller shall be completely factory wired and tested.B. Capacity control shall be based on leaving chilled liquid solution temperature.1. Temperature accuracy shall be + - 1.0°F.2. Controls shall be capable of staging the two compressors.C. Controls shall include the following components.1. 24vac transformer to serve all controllers relays and control components.2. Microprocessor based liquid solution temperature controller.3. Leaving water temperature thermistor.4. Pump bypass timer.5. Compressor recycle timer.6. Optional fan cycling control for low ambient operation.7. Chilled liquid solution flow switch.3.02 SafetiesA. Unit shall be equipped with thermistors and all necessary components in conjunction with thecontrol system to provide the following protectants.1. Low refrigerant pressure.2. High refrigerant pressure.3. Low chilled liquid solution temperature.4. Low chilled liquid solution flow.5. Thermal overload.6. Short cycling.Part 4-Operating Characteristics:4.01 TemperaturesA. Unit shall be capable of starting and running at outdoor temperatures from 55°F to 120°F.B. Optional Low Ambient Kit shall allow starting and running at outdoor temperatures to -20°F. Afield supplied and installed crank case heater must be used when operating at these temperatures.C. Unit shall be capable of starting up with a maximum 80°F and a sustained 70°F entering fluidsolution temperature to the evaporator.D. Minimum 10% Glycol solution is required. For outdoor temperatures below 32°F, referenceMAC Glycol Solution Data table.4.02 Electrical RequirementsA. Primary electrical power supply shall enter the unit at a single location.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperature.C. Units shall be available in 1 or 3-phase power at the voltages shown in the equipment electrical data.D. Control points shall be accessed through terminal block.12

ModelNumberModelNumberMAC120 Product SpecificationsPhysical DataCondenser Coil Chiller Weight (lbs)CopperTubingDiameterHeight LengthCoil Height Length Width Refrigerant(in) (in)Rows (in) (in) (in) R407cNet Shipping(in)MAC120-01 52.5 48 3/8 3 60 58.25 25.25 104 oz x 2 650 700MAC120-02 52.5 48 3/8 3 60 58.25 25.25 104 oz x 2 650 700MAC120-03 52.5 48 3/8 3 60 58.25 25.25 104 oz x 2 650 700Electrical DataVolts/ Phase/ HertzCompressor(Qty 2)13Condenser FanMotor(Qty 2)(RLA) (LRA) (RLA) (RPM)Fuse or HACR CircuitBreakerMinimumAmpsMAC120-01 208/230-1-50/60 32.1 x 2 169 x 2 2.3 x 2 900 44.73 x 2“See note 1”MAC120-02 208/230-3-50/60 19.3 x 2 137 x 2 2.3 x 2 900 48.03“See note 2”MAC120-03 380/415/460-3-50/60 10 x 2 75 x 2 1.6 x 2 900 25.70“See note 2”Note:1. MAC120-01 has two independent line voltage terminations.2. MAC120-02 & MAC120-03 has one independent line voltage termination.Supply WireLength in FeetCopper Wire Size (1% Voltage Drop)200 6 4 4 4 3 3 2 2150 8 6 6 4 4 4 3 3100 10 8 8 6 6 6 4 450 14 12 10 10 8 8 6 615 20 25 30 35 40 45 50Supply Circuit AmpacityCompressorCopeland ScrollRefrigerantR407cHeat ExchangerBrazed PlateMax Flow Rate28.8 gpmMin Flow Rate18 gpmSupply Water Temp 44°Return Water Temp 54°Minimum SystemSolution Content50 GallonsExpansion Tank Size 3% of Total SystemWater Connections 1 3/8" OD Supply & ReturnInternal Pressure Drop18 ft of headMaximumAmps75 x 2“See note 1”65“See note 2”35“See note 2”Multiaqua chillers are designed to operate exclusively with R407c refrigerant in a self-contained, pre-charged refrigerant system. Donot access the closed refrigerant circuit for any reason other than after-sale, after installation component replacement. Routinemaintenance and service is to be performed by qualified personnel only.These specifications are subject to change without notice.

MAC120 Product SpecificationsMAC120 Capacity / Watts / EER*Outdoor Air °F82 95 100 105 110TONS 9.4 9.0 8.8 8.7 8.7KILOWATTS 10.9 11.5 11.5 12.1 12.4EER 10.35 9.39 9.18 8.63 8.42* Refrigerant system performance only, pump data not included.MAC120 Glycol Solution DataPropylene Glycol %WaterFlowCapacity Min. Ambient Temp GPM Adjustment= 100% Capacity10% x 1.020 x 0.99 26°F x 1.0120% x 1.028 x 0.98 18°F x 1.0330% x 1.036 x 0.98 8°F x 1.0740% x 1.048 x 0.97 -7°F x 1.1150% x 1.057 x 0.96 -29°F x 1.16Example: 30% glycol solution.Maximum Flow Rate = 12gpm x 1.036System capacity x .98*Use Propylene Glycol OnlyImportantIf the outside temperature is expected to fall below freezing (32°F) in the area the Multiaqua chiller is to beinstalled; the installer must take the following precautions. Failure to do so will void the warranty.To not engage in cold ambient mitigation will result in the failure of components such as the heatexchanger, piping, circulating pump, etc… and or property damage.• Keep the liquid solution at a minimum of 10% percent Propylene Glycol even in areas where there is nodanger of freezing.• The percentage amount of glycol recommended is dependent on the expected ambient temperatures and thesolution makeup recommendation of the glycol manufacturer. Refer to the MAC120 Glycol Solution Data tableabove.• Ensure the system circulating pump is in a constant energized mode to keep a continuous circulation of liquidsolution.The Multiaqua chiller is a self-contained air-cooled condenser, coupled with an insulated brazed plate heatexchanger (evaporator). The system utilizes a scroll compressor to circulate refrigerant between the condenserand heat exchanger. The refrigerant is metered into the heat exchanger with a thermal expansion valve.Protecting the system are high and low pressure switches as well as a pump flow switch.Liquid solution (water and Propylene Glycol; minimum 10 % is required) is circulated through the heatexchanger by an externally mounted pump. The liquid solution flows through the heat exchanger to the systemsupply piping and on to the air handlers.Low ambient kits are available for operating ambient temperatures down to -20 degrees Fahrenheit. A fieldsupplied and installed crankcase heater must be installed when operating at these temperatures. The lowambient kits consist of an ICM 325 (+) ICM (175) for single and three phase 208/230 vac chillers. For the threephase 380/460 vac chillers a pressure activated fan control is used.These specifications are subject to change without notice.14

MAC120 Cooling Performance DataLWT (°F)MAC120 CAPACITIES with 0% GlycolENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 7.9 7.6 7.4 7.3 7.140 8.8 8.4 8.2 8.1 8.142 9.1 8.7 8.5 8.4 8.444 9.4 9.0 8.8 8.7 8.745 9.6 9.2 9.0 8.8 8.828.8 28.8 28.8 28.846 9.7 9.3 9.1 9.0 9.028.848 10.1 9.7 9.4 9.3 9.350 10.4 10.0 9.7 9.6 9.655 11.3 10.9 10.5 10.4 10.360 12.3 11.8 11.4 11.2 11.1MAC120 CAPACITIES with 10% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 7.8 7.5 7.3 7.2 7.040 8.7 8.3 8.1 8.0 8.042 9.0 8.6 8.4 8.3 8.344 9.3 8.9 8.7 8.6 8.645 8.5 9.1 8.9 8.7 8.728.8 28.8 28.8 28.846 9.6 9.2 9.0 8.9 8.928.848 10.0 9.6 9.3 9.2 9.250 10.3 9.9 9.6 9.5 9.555 11.2 10.7 10.4 10.3 10.260 12.1 11.6 11.2 11.0 10.9MAC120 CAPACITIES with 20% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 7.7 7.4 7.2 7.1 6.940 8.6 8.2 8.0 7.9 7.942 8.9 8.5 8.3 8.2 8.244 9.2 8.8 8.6 8.5 8.545 9.4 9.0 8.8 8.6 8.628.8 28.8 28.8 28.846 9.5 9.1 8.9 8.8 8.828.848 9.9 9.5 9.2 9.1 9.150 10.1 9.8 9.5 9.4 9.455 11.1 10.6 10.2 10.1 10.060 12.0 11.5 11.1 10.9 10.8These specifications are subject to change without notice.15

MAC120 Cooling Performance DataMAC120 CAPACITIES with 30% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)8295 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 7.7 7.4 7.2 7.1 6.940 8.5 8.1 8.0 7.9 7.942 8.8 8.4 8.2 8.1 8.144 9.1 8.7 8.5 8.4 8.445 9.3 8.9 8.7 8.5 8.528.8 28.8 28.8 28.846 9.4 9.0 8.8 8.7 8.728.848 9.8 9.4 9.1 9.0 9.050 10.1 9.7 9.4 9.3 9.355 11.0 10.6 10.2 10.1 10.060 11.9 11.5 11.1 10.9 10.8MAC120 CAPACITIES with 40% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 7.6 7.3 7.1 7.0 6.840 8.5 8.1 7.9 7.8 7.842 8.8 8.4 8.2 8.1 8.144 9.1 8.7 8.5 8.4 8.445 9.3 8.9 8.7 8.5 8.528.8 28.8 28.8 28.846 9.4 9.0 8.8 8.7 8.728.848 9.8 9.4 9.1 9.0 9.050 10.0 9.7 9.4 9.3 9.355 10.9 10.5 10.1 10.0 9.960 11.9 11.4 11.0 10.8 10.7MAC120 CAPACITIES with 50% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 7.5 7.3 7.1 7.0 6.840 8.4 8.0 7.8 7.7 7.742 8.7 8.3 8.1 8.0 8.044 9.0 8.6 8.4 8.3 8.345 9.2 8.8 8.6 8.4 8.428.8 28.8 28.8 28.846 9.3 8.9 8.7 8.6 8.628.848 9.7 9.3 9.0 8.9 8.950 9.9 9.6 9.3 9.2 9.255 10.8 10.4 10.0 9.9 9.860 11.8 11.3 10.9 10.7 10.6These specifications are subject to change without notice.16

Table of ContentsPageIntroduction 19System Description & Sequence of Operation 20Electrical & Physical Data 21Description of Electrical Controls 23Chiller Controls Sequence of Operation 25Refrigeration System Operation 26Description of Refrigeration Components 26Piping System Components 28Layout & Design 29Banked Chiller Configuration 30Installation Notes 31Propylene Glycol Content 32Expansion Tank 32Filling the System with Propylene Glycol 33Air Elimination 3318

Multiaqua Chiller ManualThe Multiaqua Chiller System is the only air conditioning/refrigeration system of its kind in the worldtoday offering the degree application flexibility described in the following manual.The Multiaqua Chiller System is not only unique in its application flexibility; it is unique in superiorquality, rated capacities and rugged durability. When installed in accordance with these instructions thesystem will deliver years of trouble free service.Proper equipment sizing, piping design and installation are critical to the performance of the chiller. Thismanual is meant to be a “how to” introduction to piping and installing the Multiaqua Chiller System.MAC120 Chiller Features• Copeland Scroll Compressors• Advanced Motor Protection• Loss of Flow Protection• Control Power Transformer• Low Ambient Option• Integrated Chilled Solution Pump Control• Flow Switch• Strainer Connection Kit• Painted Metal Condenser Protector Grille• Dual Refrigeration Circuits and Single Liquid Solution CircuitRECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY ORINSTRUCTION RELATED INFORMATION.Web site information addresses are supplied throughout this manual for piping and accessory information.The plumbing industry also has pressure drop information on ferrous and copper piping systems.The following sections will describe each component and how it functions within the system. Installationinformation is supplied where appropriate. The piping design section will explain the design and layoutthe piping system from a “how to” perspective. Following the examples provided will enable the installerto determine the correct pipe and accessory sizing, as well as equipment location. It is important to knowbefore installation if the proposed system will operate correctly and by doing a formal layout of a newapplication or review of an existing piping system will make that determination.Throughout this manual the term “liquid solution” is used in place of water. The chiller circulates asolution of water and Propylene Glycol.It is essential to operate the system with a minimum of 10% glycol. DO NOT OPERATE THISSYSTEM USING WATER ALONE.For proper liquid solutions mix ratios, refer to page 14 or the glycol manufacture’s recommended mixratios.19

System Description & Sequence of OperationThe Multiaqua Chiller is a self-contained, air-cooled condenser, coupled with an insulated brazed plateheat exchanger (evaporator). The system utilizes scroll compressors to circulate refrigerant between thecondenser and heat exchanger. The refrigerant is metered into the heat exchanger with a thermostaticexpansion valve. Protecting the system are high and low pressure switches as well as a pump flow switch.Liquid solution (water and Propylene Glycol is circulated through the heat exchanger by a field suppliedpump. The liquid solution flows through the heat exchanger to the system supply piping and on to the airhandlers.A solenoid-operated, motorized valve or circulator controls the flow of the chilled liquid solution throughthe air handlers. The valves or circulators can be actuated by a variety of different control schemes.Liquid solution temperature is controlled by a chiller mounted digital electronic controls. A systemsequence of operation, individual control description, troubleshooting information and a schematic areincluded in the controls section.It must be recognized that ferrous pipe may cause acceleration deterioration of the brazedplate heat exchanger and could void the heat exchanger warranty.Cooling load DiversityEquipment sizing for a chilled liquid solution system can utilize Cooling Load Diversity. Diversity isdescribed as the actual amount of cooling needed (heat load) by various sections of a structure at a giventime. Conventional air conditioning systems are designed for the highest structure heat load. Theconventional system determines and selects equipment based on the peak heat load demanded by thestructure. A system sized to take advantage of diversity would determine the heat load by the time of day,building exposure and usage. As an example the sections of a structure facing west, demand more coolingin the afternoon, than sections facing east. The opposite of this is true in the morning, where the eastsection is exposed to a higher heat load requiring more cooling. Utilizing diversity the chiller systemwould adapt to the needs of each side of the structure during peak demand by delivering more cooling tothat area and less to the areas that do not need it. A structure utilizing a conventional DX system, requires8 tons of cooling at peak load, could utilize a much smaller capacity system (potentially 4 or 5 tons) if thesystem installed could take advantage of load diversity, which would supply the necessary amount ofcooling to the space, as and when needed instead of keeping a larger capacity available at all times.Cooling load diversity can best be determined by referring to ACCA. (Air Conditioning Contractors ofAmerica) Manual “J”, Refer to the appendix A-2, Multi-Zone Systems. ACCA’s Internet address ishttp://www.acca.org/Because of diversity a Multiaqua Chiller can serve more total air handler tonnage than chiller capacity. A10-ton chiller may be delivering chilled liquid solution to 15 or more tons of air handler capacity. Becauseof cooling load diversity, the building does not need equal amounts of cooling in each area at the sametime.20

ELECTRICAL AND PHYSICAL DATAThe information contained in this manual has been prepared to assist in the proper installation, operationand maintenance of the chiller. Improper installation, or installation not made in accordance with theseinstructions can result in unsatisfactory operation and/or dangerous conditions and can cause the relatedwarranty not to apply.Read this manual and any instructions packaged with separate equipment required to make up the systemprior to installation. Retain this manual for future reference.Separate and independent power supplies and disconnects must be provided. These chillers haveseparate and discreet power requirements within one cabinet.All power to the chiller must be turned off prior to opening cabinet and or servicing.Failure to properly ground chiller can result in death.Disconnect all power wiring to chiller before maintenance or service work. Failure to do so cancause electrical shock resulting in personal injury or death.All wiring must be done in accordance with the NEC (National Electric Code) as well as state andlocal codes, by qualified electricians.Product warranty does not cover any damages or defect to the chiller caused by the attachment oruse of any components, accessories or devices (other than those authorized by the manufacturer) into,onto or in conjunction with the chiller. You should be aware that the use of unauthorized components,accessories or devices may adversely affect the operation of the chiller and may also endanger life andproperty. The manufacturer disclaims any responsibility for such loss or injury resulting from the use ofsuch unauthorized components, accessories or devices.Upon receiving the chiller and components, inspect for any shipping damage. Claims for damage,either apparent or concealed should be filed immediately with the shipping company.No liquid other than the solution of water and Propylene Glycol (mixed in accordance with table6 page 32) shall be used in the piping system.Corrosive environments may subject metal parts of the chiller to rust and deteriorate. Theoxidation could shorten the chiller’s useful life. Corrosive elements include salt spray, fog or mist in seacoastal areas, sulfur or chlorine from lawn watering systems and various chemical contaminants fromindustries such as paper mills and petroleum refineries.If the unit is to be installed in an area where contaminates are likely to be a problem, special attentionshould be given to the equipment location and exposure.• Avoid having lawn sprinklers spray directly on the chiller cabinet.• In coastal areas, locate the chiller on the side of the building away from the water front.• Elevating the chiller off of its slab or base enough to allow air circulation will help avoid holding waterin contact with the cabinet base.• Regular maintenance will reduce the build-up of contaminants and help protect the cabinet finish.• In severe locations having the chiller coated with an “epoxy” or other coating formulated for airconditioning systems located in coastal areas may be necessary.21

Consult local building codes or ordinances for special installation requirements. Whenselecting a site to locate the chiller, consider the following:• A minimum clearance of 60” on the service access front, 12” on the rear air inlet and a 60” fan dischargeclearance.• The chiller can be located out or indoors. If installed indoors there must be 9000 cfm of outdoor airchanges circulated through the mechanical room to sufficiently operate the chiller. No ductwork can beconnected to the chiller’s condenser or condenser fans.• If a concrete slab is used, do not connect the slab directly to any building’s foundation or structure toprevent sound transmission.• Locate the slab on a level surface that is above grade to prevent ground water from entering the chillercabinet.60” Fan Discharge ClearanceStated Service Clearances12” Rear Clearance60” Front ServiceClearance0” Side Clearance58.25 60.00”60.00”58.25”Chiller Supply and ReturnPiping Access60.00”15”10”13”4.25”25.25”22

Description of Electrical ControlsControl Transformer: The control transformer is rated at 24 vac, 40 va(1.6 amps @ 24vac)Pump Bypass Timer: The pump bypass timer is a 24 vac, 3-wire control.When energized the timer will bypass the flow switch for 10 seconds (bycreating a circuit to the pump relay), energizing the pump relay, allowing thepump to operate long enough to close the flow switch. In a normally operatingsystem the flow switch will stay closed powering the pump relay in series withthe low and high- pressure switches. Should the flow switch open, the timercan only be reset by opening and closing the chiller's line voltage disconnect.Refrigerant System Timer: The refrigerant timer is a 24 vac, 5-minute delayon break, 20wire timer. The normally closed contacts of the timer energizethe compressor contactor through the chilled solution control. When the chilledsolution control contacts open, the timer delays by opening its contact for 5-minutes before resetting to the closed position.High Pressure Switch: The high-pressure switch is an automatic reset controlthat senses compressor discharge line pressure. It opens at 400 PSIG andcloses at 300 PSIG.23

Description of Electrical Controls (continued)Low Pressure Switch: The low-pressure switch is an automatic reset controlthat senses compressor suction line pressure. It opens at 40 PSIG andcloses at 80 PSIG.Flow Switch: The flow switch senses liquid solution flow. The paddle of theswitch is inserted through a fitting into the pump discharge line. Liquid solutionflow deflects the paddle closing the switch. The flow switch is position sensitive.The arrow ↑ on the switch must point in the direction of liquid solution flow.Compressor Contactor: The compressor contactor energizes the compressorthrough the two or three normally open contacts. The contactor coil operates(closes the contacts) when energized by 24 vac.Liquid Solution Temperature Control: The liquid solution temperature controlis an adjustable microprocessor based temperature control. This control receivestemperature information from a thermistor located on the liquid solution supplyline. A liquid crystal display continually indicates liquid solution temperature. Thecontrol is mounted inside the chiller cabinet.24

Chiller Controls Sequence of OperationWhen powered up, the Multiaqua chiller system energizes the control transformer creating 24 vac control voltage.First the pump bypass timer is energized and temporarily bypasses the flow switch, energizing the pump relay. Thepump then starts to move liquid solution through the piping system (in a properly filled and air purged system). Themovement of liquid solution from the pump discharge keeps the flow switch closed. After a 10 second delay the pumpcontact opens, connecting the flow switch in series with the high and low pressure switches. The pump will now runcontinually unless the power supply is interrupted, or the flow switch opens.If the liquid solution temperature controller is calling for cooling the control circuit is routed through the short cycletimer and the three safety switches (the flow, high and low pressure switches) to the compressor contactor. This willenergize the compressor(s) and condenser fan motors. The liquid solution controller will open at the user programmedset point, causing the refrigerant short cycle timer to open it's contact for 5 minutes as it delays before resetting to theclosed position. This will de-energize the compressor. Power fluctuations will also initiate a 5 minute time delay. The5 minute delay allows the refrigerant system a period for pressure equalization, protecting the compressor(s) fromshort cycling.The chiller temperature controller utilizes a thermistor to monitor the liquid solution temperature change. Thetemperature is then compared to the set point and differential temperatures programmed into the control by the user.The set point is the liquid solution temperature which will cause the control switch to open. For example: The controlset point is programmed at 44°F LWT with a 10°F differential, which opens the controller at 44°F LWT and closes at54°F. The differential temperature is the number of degrees above set point temperature programmed into thecontroller. If liquid solution temperature falls to the set point, the controller cycles the compressors off.Chillers are shipped with the control set point adjusted to 44°F LWT and a 10°F differential. Liquid solutiontemperature set point should not be set below 35°F.25

SYSTEM FAULTS:Flow Switch Opening: The flow switch is normally closed during pump operation. Should liquid solution flow beinterrupted for any reason, the control will open shutting down and locking out the chiller operation. The only exceptionto this is when power is first applied to the chiller and the pump bypass timer bypasses the flow switch for 10 seconds.When the system is first filled with liquid solution and the pump is started, expect the system to cycle offon the flow switch until all of the air is removed from the piping system. The system will have to bereset by opening and then closing the disconnect switch or circuit breaker powering the chiller.Low Pressure Switch Opening: Should the compressor suction pressure go low enough (40 PSI) to open the lowpressureswitch, the compressor and condenser fan motors will shut down. Check for a refrigerant leak, inoperativethermal expansion valve, low liquid solution control setting, low ambient operation, low liquid solution flow, etc.High Pressure Switch Opening: Should the compressor discharge pressure go high enough to open the high- pressureswitch the compressor and condenser fan motors will shut down. Check for a dirty condenser coil, inoperable fan motor(s)or the recirculation of condenser air.Refrigeration System OperationThe refrigeration system is a closed loop consisting of 2 compressors, dual circuit heat exchanger (evaporator), meteringdevices (TXVs) and condenser coil. The refrigerant circulated is R407c. Hot gas is pumped from the compressors to theto the condenser coil where the two condenser fans pull cooler air across the coil condensing and sub cooling the refrigerant.The now liquid refrigerant flows through the liquid line to the thermal expansion valves, where the refrigerant pressuredrops causing the refrigerant to boil at a much lower temperature (34-40°F). The refrigerant leaves the expansion valves andswirls through the plates of the heat exchanger absorbing heat from the circulating liquid solution.The evaporator or heat exchanger is designed to operate with an 8-10 °F superheat. The condenser is designed tocondense the refrigerant and sub cool it to 10 °F below condensing temperature.Description Of Refrigerant ComponentsScroll Compressor: All Multiaqua chillers feature Scroll compressors. Scrolltechnology ensures reliable high performance at a low sound level over a wide rangeof operating conditions.Caution the top half of the scroll compressor operates at a temperature highenough to cause serious injury.26

Description Of Refrigerant Components (continued)Brazed Plate Heat Exchanger: The "Heat Exchanger" or evaporator is of abrazed copper and stainless steel design. Refrigerant and liquid solution is channeledthrough narrow openings between plates and flows in opposite directions. The counterflow design and fluid turbulence ensures maximum heat exchange at minimal pressuredrop.Thermal Expansion Valve: Multiaqua chillers are equipped with Thermal Expansionvalves. The valves feature a liquid charged sensing bulb for consistent superheat atvarious load conditions.Condenser Coil: The air-cooled condenser coil is of copper tube with aluminum finconstruction. The coil is protected by a painted metal condenser grille.27

Piping System ComponentsSupply Storage Tank: The supply storage tank must be used in the system with lessthan 25 gallons of liquid solution. The tank prevents rapid cycling of the compressorsand acts as a reserve for chilled liquid solution.Supply storage tank must be insulated in the field.Part Number: WX202H (20 Gallon)WX202H (42 Gallon)Expansion Tank and Air Scoop: The Expansion Tank and Air Scoop assembly isused to compensate for the expansion and contraction of liquid in the system. Theair scoop eliminates air entrance in the liquid solution.Part Number: 1500/1"Liquid Solution Bypass Valve: The liquid solution bypass valve relieves systempressure from the liquid solution supply to the return as system air handler controlare cycled off.Part Number: D146M1032- 3/4"D146M1040- 1 1/4"Motorized Valve: The air handler motorized valve controls the flow of liquid solutionto the systems air handlers. Each air handler in the system should have a motorizedor solenoid valve.Part Number: MZV524E-T 1/2" 2-Way Zone ValveMZV525E-T 3/4" 2-Way Zone ValveMZV526E-T 1" 2-Way Zone ValveVT3212G13A020 1/2" 3-Way Zone ValveVT3212G13A020 3/4" 3-Way Zone Valve28

Composite Piping Layout and DesignUnderstanding the function and friction loss of each part of the piping system is important to the layout and successfulinstallation of a chilled liquid solution system.1-2-3-4-5-6-7-2-Way Liquid Solution Control ValvesBypass ValveStorage TankExpansion TankCoilChillerPumpThe circulation pump is the key performer in the piping system. The pump must circulate the liquid solution through theheat exchanger and piping system to the air handlers. Pumps are designed to deliver a flow rate measured in gallonsper minute(GPM). The pump must be able to overcome the resistance to flow (pressure drop) imposed by the chillercomponents, piping system and air handlers while maintain the necessary flow rates in gallons per minute. Pumpcapacities in gallons per minute and pressure drop (feet of head) are listed in table 1.An adjustable valve must be used to throttle the discharge liquid solution flow rate to appropriate levels basedon capacity and glycol mix percentages.Table 1Chiller System DataMAC SeriesMin. Liquid Solution Flow RateMax.Liquid Flow RateMin. Liquid Solution Content in SystemExpansion Tank SizeInternal Chiller Pressure LossChiller Liquid Solution ContentGPMGPMGallonsGallonsFt.of HeadGallonsMAC-1201828.8503% of Total1.851.5Piping resistance or pressure drop is measured in feet of head. A foot of head is the amount of pressure drop imposedin lifting liquid solution one foot. Pumps in the Multiaqua system are designed to move rated liquid solution flow (seetable 1) in GPMs.29

Banked Chiller ConfigurationNotes:Installing Multiaqua chillers in parallel is recommended.30

Installation Notes:Piping such as PEX,steel, copper or PVC can be used with the Multiaqua system. Check local building codes formaterial conformation. Care must be taken when using PVC as the presence of propylene glycol may destroyplastics. Pressure drop data for the selected piping material is readily available and should be used. Should theMultiaqua chiller be installed using existing steel (ferrous metal) piping system, dielectric fittings must be usedat the chiller and air handler. The factory supplied wye strainer will capture particles of rust and sedimentinherent with steel piping and should be checked and cleaned after initial start up and open a regular maintenanceduring the life of the system.Any piping used to conduct liquid solution must be insulated in accordance with local and national mechanicalcodes. Information on insulation installation and application can be obtained from Armaflex web site atwww.armaflex.com and Owens-Corning site at www.owenscorning.com/mechanical/pipe/. For future servicingof the chiller and air handlers, it is suggested that shutoff valves be installed at the chiller and air handler(s). Ifball valves are used, they can double as balancing valve(s) in the supply piping at each air handler. Chillershutoff valves should be attached at the chiller connections with unions.The air handlers are to be controlled with electrically operated "slow-opening" solenoid valves, circulators ormotorized zone valves as manufactured by Erie controls (www.eriecontrols.com/products/index.htm) A remotethermostat or air handler installed digital control operate the valves.Bypass valves as shown in drawing 1, should be installed between the supply and the return chilled liquidsolution supply pipes at a convenient location to the installation. The bypass valve operates to bypass liquid solutionbetween the supply and return chilled liquid solution lines. In the event air handlers valves should shut down, thebypass valve is set to open up and bypass liquid solution between the supply and return lines, relieving pressureand eliminating the possibility of pump cavitations. To adjust the valve, run the system with one air handlersolenoid actuated. De-energize the solenoid valve, (at this point no liquid solution will be flowing through the airhandlers.) and adjust the bypass valve to relieve pressure between the supply and return piping.Bleed ports will be factory installed on all Multiaqua air handlers. Bleed ports are opened to eliminate air trappedin the air handlers after filling the system with liquid solution and Propylene Glycol and before operating therefrigerant compressor in the chiller.The minimum liquid solution content in the chiller system,(piping, chiller, and air handlers), is 50 U.S. gallons.Estimate the system liquid solution content. Should the system have less than 50 gallons of liquid solutioncontent, a chilled liquid solution storage tank must be installed. The tank stores enough chilled liquid solutionto prevent frequent chiller compressor cycles at light load and prevents chilled liquid temperature swings athigher load conditions when the chiller compressor is waiting to cycle on the time delay control.Propylene Glycol must be added to the water used in the system. Propylene helps prevent freeze-ups due tolow ambient temperature conditions and low chilled liquid solution temperatures. In comparison to water,Propylene Glycol slightly lessons the temperature exchange in the chiller heat exchanger. However, that isoffset by the increased flow of liquid solution through the piping system enabled by the Propylene Glycol. Todetermine the Propylene Glycol content for various ambient temperatures refer to table 6 page 32.In no instance should a Multiaqua chiller be installed with less than 10% Propylene Glycol content in the pipingsystem. Using less than the recommended Propylene Glycol percentage content voids equipment warranty.31

Polypropylene Glycol System Content vs.Minimum Ambient TemperatureTo not engage in cold ambient mitigation will result in the failure of components, property damage andvoid warranty.Table 6Percent of Propylene Glycol to Water ContentPropylene Water Min. AmbientCapacityGlycol % Flow Temperature10% x 1.020 x .99 26°F20% x 1.028 x .98 18°F30% x 1.036 x .98 8°F40% x 1.048 x .97 -7°F50% x 1.057 x .96 -29°FGPM Adjustment= 100 % Capacityx 1.01x 1.03x 1.07x 1.11x 1.16Ethylene Glycol is environmentally hazardous and not recommended. Inhibited Propylene Glycol ( typicalautomotive coolant) is not to be used in a Multiaqua Chiller under any circumstances. Dow Chemical's "Ambitrol"family of Glycol-based coolants of food grade Propylene Glycol is suggested. Information on Ambitrol is availablefrom Dow at www.dow.com, search word "Ambitrol".Expansion Tanks:Liquid solution expansion and contraction within the closed system must be compensated for with an expansiontank. The expansion tank used with the Multiaqua system, is a steel tank with a rubber bladder attached to itinternally. There is air pressure on one side of the rubber bladder that keeps the bladder pushed against thesides of the tank before the system is filled with liquid solution (illustration above). As the liquid solution heatsup the bladder will be pushed further away from the tank walls, allowing for expansion and contracting as theliquid solution temperature changes. By flexing, the bladder controls the system pressure adjusting totemperature variations of the chilled liquid solution system.It is critical that the expansion tank's air bladders pressure be less than the system solution pressure. Airpressure can be measured with an automotive tire gauge at the bicycle valve port on the expansion tank. Bleedingair out of the bladder or increasing the pressure with a bicycle pump will adjust pressure.System must use a liquid solution storage tank if system volume is less than 50 U.S. gallons.32

Filling System with Liquid Solution and Coolant(Propylene Glycol)Before filling system with Propylene Glycol and water, pressure test the piping system with compressed air.Testing should be done at a maximum of 50 psi.The system should hold air pressure for a minimum ofone hour with no leakage.Concentrations of Propylene Glycol in excess of 50% will destroy o-rings in fittings and pump. Water shouldbe added to the system first or a liquid solution diluted Propylene Glycol mix.System that contains 50 or more U.S. gallons should have a tee fitting with a stopcock installed in the returnline close to the chiller. The stopcock can be opened and attached to a hose with a female X female hosefitting. In the open end of the hose section (1 -1.5 feet long) insert a funnel and pour into the system thediluted Propylene Glycol/liquid solution mixture or add water first and then the quantity of Propylene Glycolneeded for minimum ambient protection (refer to Table 6). After adding the Propylene Glycol/water mixture, orliquid solution and then coolant proceed to add enough water to the system to achieve a 15 psi gauge pressure.To measure system pressure shut off the stopcock, remove hose and attach a water pressure gauge. Openthe stopcock to read system pressure.Systems that use the Chilled Liquid Solution Storage Tank should be filled at the tee/stopcock fitting in theoutlet fitting of the storage tank. Fill the tanks with 10 gallons of water and with a funnel pour the calculated(refer to Table 6) amount of Propylene Glycol into the tank. The amount of Propylene Glycol added should becalculated to achieve minimum ambient protection. After adding Propylene Glycol, fill the system with enoughliquid solution to bring system pressure to approximately 15 psi gauge pressure. To measure system pressureshut off the stopcock and attach a water pressure gauge. Open the stopcock to read system pressure.Air EliminationSince we have the system filled we must eliminate the air left in the system. Briefly open each bleed valve atthe air handlers and allow trapped air to escape. This will eliminate much of the air left in the system.Next we will start the pump and continue bleeding air from the system. Be sure the chiller has line voltageavailable to it and set the chilled liquid solution control up to 100 °F, which will ensure that only the pump runsat this point. The pump should now start and remain running. Should the pump stop at any time during thisprocess it is an indication that the flow switch had air move across it allowing the circuit to be interrupted.Continue to bleed some air out of the system at the highest locations before resetting the pump bypass timerto get the pump running again. Open and close the power supply switch to the chiller to restart the pump.Continue bleeding air with the pump operating. You may have to start and re-start the pump a few times tocomplete air removal.If you continue having air entrapment issues, it will be necessary to install a micro bubble remover device.All piping systems should have a minimum of 10% Propylene Glycol in the system even in climates with nonfreezingambient temperatures.Using less than the recommended Propylene Glycol percentage content voids equipment warranty.Liquid solution control valves (solenoid or motorized valves) should be selected for low pressure drop. If a selectedvalve contributes to pushing your total head calculation to more than 50 feet of head, a larger valve may beneeded to bring your total head below the maximum of 50 feet.Liquid Solution Balancing:Liquid solution balancing will require an accurate digital thermometer to measure return line liquid solutiontemperature at each air handler. Set the chilled liquid solution temperature control in the chiller at a normaloperational temperature (44°F) and measure pump discharge temperature with the digital thermometer to checksystem solution temperature. After the chilled liquid solution temperature has lowered to the set point begin thebalancing process. The system must be free of air and each air handler set at a temperature low enough tocontinue cooling operation (and liquid solution flow) during the balancing process. Begin by measuring the returnline chilled liquid solution temperature of each air handler. Begin incrementally closing the supply line balancevalve at the air handlers with the lowest return line chilled liquid solution temperature. Continue this processuntil each air handler has close to the same return line chilled liquid solution temperature.33

MAC120-3 Ladder Wiring Diagram380/460-3-50/6034

MAC120-3 Wiring Diagram380/460-3-50/60MULTIAQUABL380/460-3-50/60BKL1RDL2BKCON1`BKBKRDWHT1COMPT21T3BKBK380/460-3TRANSFORMER24 vacBLYLYLRDBKBLFSLPS1BLGNDL3WHCON2BKRDWHT1T2T3COMP21234BKBKHPS1BKBKTIMER1BKBKBKWHREL 1REL 2BKBKBK2TM21NOTE 112BLLPS2BLBLBL34BL BLDTC 1 NO C DTC 2 NO CBKBLBKBKHPS2BK24 vac COM 24 vacWHWHBKCOMBKFC1BKFAN1FC2FAN2BKBK2TM21RDWHTITLEAUTHORMAC120-03 380/460-3-50/60kjgLEGEND:FACTORY WIRINGFIELD WIRINGCON COMPRESSOR CONTACTORFS FLOW SWITCHLPS LOW PRESSURE SWITCHNOTES:1.PUMP STARTER RELAYDATEREVISION09/22/080807300029 REV 1DTC DIGITAL TEMPERATURE CONTROLLERFC CONDENSER FAN CONTACTORREL CONDENSER FAN RELAYHPSTIMERTM2HIGH PRESSURE SWITCHPUMP BYPASS TIMERREFRIGERANT SYSTEM TIMER35

MAC120-3-L with Low Ambient Kit Wiring Diagram380/460/-3-50/60MULTIAQUA380/460-3-50/60BKL1RDL2BKCON1`BKBKRDWHBLT1COMPT21T3BKBK380/460-3TRANSFORMER24 vacBLYLYLRDBKBLFSLPS1BLGNDL3WHCON2BKRDWHT1T2T3COMP21234BKBKHPS1BKBKTIMER1BKBKBKNOTE 1REL 1REL 2BKBKBK2TM21FAN CYCLEPRESSURESWITCH12BLLPS2BL34FAN CYCLEPRESSURESWITCHBL BLDTC 1 NO C DTC 2 NO C24 vac COM 24 vac COMFC1NOTE 2BL1FAN134 6BKFC24FAN21 36BKBKBKHPS22TM21BKNOTE 3TITLEAUTHORDATEREVISIONMAC120-03 WITH LOW AMBIENT KITkjg09/22/080608400097 REV 1LEGEND:FACTORY WIRINGFIELD WIRINGDTC DIGITAL TEMPERATURE CONTROLLERFC CONDENSER FAN CONTACTORREL CONDENSER FAN RELAYCONFSLPSHPSTIMERTM2COMPRESSOR CONTACTORFLOW SWITCHLOW PRESSURE SWITCHHIGH PRESSURE SWITCHPUMP BYPASS TIMERREFRIGERANT SYSTEM TIMERNOTES:1. PUMP STARTER RELAY2. LOW AMBIENT RELAY #13. LOW AMBIENT RELAY #236


MAC120-2 Wiring Diagram208/230-3-50/6038

MAC120-2-L with Low Ambient Kit Wiring Diagram208/230-3-50/6039




MAC120 CERTIFIED DRAWING43

MAC036,048 & 060 Air-Cooled ChillerAir-Cooled Chillers for Global Residentialand Light Commercial MicroClimates44

MAC036,048 & 060 NOMENCLATURE BREAKDOWNMACXXX - XX - XAir-Cooled Chiller036= 36,0000 BTUH048= 48,0000 BTUH060= 60,0000 BTUHAccessoryOptionsN= No OptionsL= Low Ambient KitVoltage01 = 208/230-1-50/6002 = 208/230-3-50/6003 = 380/460-3-50/60Available Model NumbersMAC036-01-NMAC036-01-LMAC036-02-NMAC036-02-LMAC048-01-NMAC048-01-LMAC048-02-NMAC048-02-LMAC060-01-NMAC060-01-LMAC060-02-NMAC060-02-LMAC060-03-NMAC060-03-L45

HVAC Guide SpecificationsAir-Cooled Liquid ChillerNominal Size:3, 4 & 5 TonsMultiaqua Model Number:MAC036-01-N-407, MAC036-01-L-407: MAC036-02-N-407, MAC036-02-L-407,MAC048-01-N-407, MAC048-01-L-407: MAC048-02-N-407, MAC048-02-L-407,MAC060-01-N-407, MAC060-01-L-407, MAC060-02-N-407, MAC060-02-L-407,Part 1-General1.01 System DescriptionMultiaqua air-cooled liquid chillers are designed using scroll compressors, low sound condenser fans and highefficiency pumps.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Construction shall comply with ASHRAE 15 Safety Code, NEC and ASME applicable codes. (U.S.A.Codes)C. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.D. ETL CertifiedE. Fully load tested at the factory.F. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested air-cooled liquid chiller.2. Shall be assembled on heavy gauge steel mounting/lifting rails.3. Contained within the unit cabinet shall be all factory wiring, piping, controls, refrigerant charge(R407c), POE oil and special accessories required prior to start up.4. Brass body strainer with 20 mesh screen and blow down shall be supplied in cabinet as afield installable accessory.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.2. Capable of withstanding 500-hour salt spray test in accordance with the ASTM (USA) standard.C. Condenser Fans:1. 4-blade, aluminum construction and shall be dynamically balanced and corrosion resistant.2. Horizontal discharged air.3. Motors and blades shall be protected by coated steel wire safety guards.D. Fan Motors:1. Condenser fan motors shall be single speed, direct drive.2. Totally enclosed.3. Permanently lubricated sleeve bearings and Class F insulation.4. Internal overload protection.E. Compressors:1. Unit shall contain one fully hermetic scroll compressors.2. Direct-drive, 3500 rpm (60Hz)3. Compressor motor shall be suction gas cooled.4. Internal motor protection.5. Externally protected by low and high pressure cutout devices.6. Individual vibration isolators.46

F. Pump:1. Circulating pump shall be stainless steel with high efficiency enclosed motor.2. Unit shall have chilled liquid solution piping to the exterior of the cabinet.G. Evaporator:1. Evaporator shall have one independent refrigerant circuit and one liquid solution circuit.2. Rated for a refrigerant side working pressure of 450 psig and a maximum water side workingpressure of 150 psig.3. Single pass, ANSI type 316 stainless steel, brazed plate construction.4. Externally insulated with closed cell, elastomeric foam. (ASTM518)H. Condenser:1. Condenser coil shall be air-cooled with integral subcooler.2. One independent refrigerant circuit.3. Constructed of rifled copper tubing mechanically bonded to aluminum fins.4. Cleaned and dehydrated.5. Factory leak tested to 450 psig.I. Refrigerant Circuits:1. Each circuit shall contain a sight glass, liquid line filter, thermal expansion valve,refrigerant charge of R407c and POE compressor oil.Part 3-Controls and Safeties3.01 ControlsA. Chiller shall be completely factory wired and tested.B. Capacity control shall be based on leaving chilled liquid solution temperature.1. Temperature accuracy shall be + - 1.0°F.2. Controls shall be capable of staging the two compressors.C. Controls shall include the following components.1. 24vac transformer to serve all controllers relays and control components.2. Microprocessor based liquid solution temperature controller.3. Leaving water temperature thermistor.4. Pump bypass timer.5. Compressor recycle timer.6. Optional low pressure bypass timer for low ambient operation.7. Optional fan cycling control for low ambient operation.8. Chilled liquid solution flow switch.3.02 SafetiesA. Unit shall be equipped with thermistors and all necessary components in conjunction with thecontrol system to provide the following protectants.1. Low refrigerant pressure.2. High refrigerant pressure.3. Low chilled liquid solution temperature.4. Low chilled liquid solution flow.5. Thermal overload.6. Short cycling.Part 4-Operating Characteristics:4.01 TemperaturesA. Unit shall be capable of starting and running at outdoor temperatures from 55°F to 120°F.B. Optional Low Ambient Kit shall allow starting and running at outdoor temperatures to -20°F. Afield supplied and installed crankcase heater must be used when operating at these temperatures.C. Unit shall be capable of starting up with a maximum 80°F and a sustained 70°F entering fluidsolution temperature to the evaporator.D. Minimum 10% Glycol solution is required. For outdoor temperatures below 32°F, referenceMAC Glycol Solution Data table.4.02 Electrical RequirementsA. Primary electrical power supply shall enter the unit at a single location.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperature.C. Units shall be available in 1 or 3-phase power at the voltages shown in the equipment electrical data.D. Control points shall be accessed through terminal block.47

ModelNumberModel NumberHeight(in)MAC036, 048 & 060 Product SpecificationsPhysical DataCoil Chiller Weight (lbs)CopperLengthCoil Height Length Width RefrigerantDiameterNet Shipping(in)Rows (in) (in) (in) R407c(in)MAC036 38 48 3/8 1 49.75 39.75 16.25 84.66 oz 280 283MAC048 38 48 3/8 2 49.75 39.75 16.25 92.95 oz 292 295MAC060 38 48 3/8 2 49.75 39.75 16.25 92.95 oz 313 316Volts/ Phase/HertzElectrical DataCondenserCompressor Fan Motor(2 qty)Pump MotorFuse or HACR CircuitBreaker Per Circuit(RLA) (LRA) (FLA) (RPM) (FLA) (RPM) Minimum AmpsMAC036-01 208/230-1-50/60 18.4 95 1.05 1050 3.70 3450 28.80 45MAC036-02 208/230-3-50/60 11.4 77 1.05 1050 3.70 3450 20.05 30MAC048-01 208/230-1-50/60 22.1 137 1.05 1050 3.70 3450 33.43 50MAC048-02 208/230-3-50/60 16.4 91 1.05 1050 3.70 3450 26.30 40MAC060-01 208/230-1-50/60 32.1 169 1.05 1050 3.70 3450 45.93 70MAC060-02 208/230-3-50/60 19.3 137 1.05 1050 3.70 3450 29.93 45MAC060-03 380/460-3-50/60 10 75 0.60 1050 2.85 3500 16.55 25MaximumAmpsMAC036 MAC048 MAC060CompressorCopeland Copeland CopelandScrollScrollScrollRefrigerant R407c R407c R407cHeat Exchanger Brazed Plate Brazed Plate Brazed PlateMax. Head Pressure 50 ft. 50 ft. 50 ft.Max Flow Rate 8.6 gpm 11.5 gpm 14.4 gpmMin Flow Rate 5.5 gpm 6.5 gpm 9.0 gpmSupply Water Temp 44° 44° 44°Return Water Temp 54° 54° 54°Min. Solution Content 25 Gallons 25 Gallons 25 GallonsExpansion Tank Size 2 Gallons 2 Gallons 2 GallonsPump 0.5 HP 0.5 HP 0.5 HPWater Connections 1" S & 1.25" R 1" S & 1.25" R 1" S & 1.25" RInternal Pressure loss 1.77 ft of head 1.68 ft of head 1.85 ft of headSupply WireLength in FeetCopper Wire Size (1% Voltage Drop)200 6 4 4 4 3 3 2 2150 8 6 6 4 4 4 3 3100 10 8 8 6 6 6 4 450 14 12 10 10 8 8 6 615 20 25 30 35 40 45 50Supply Circuit AmpacityMultiaqua chillers are designed to operate exclusively with R407c refrigerant in a self-contained, pre-charged refrigerant system. Do notaccess the closed refrigerant circuit for any reason other than after-sale, after installation component replacement. Routine maintenanceand service is to be performed by qualified personnel only.These specifications are subject to change without notice.48

MAC036, 048 & 060 Product SpecificationsMAC036, 048 & 060 Capacity / Watts / EERMAC036 MAC048 MAC060O/A Temp (°F) Tons KW EER Tons KW EER Tons KW EER82 2.9 3.3 10.55 3.9 4.3 10.88 5.1 5.3 11.5595 2.8 3.7 9.08 3.7 4.6 9.65 4.9 5.9 9.97100 2.7 3.9 8.31 3.6 4.8 9.00 4.8 6.1 9.44105 2.7 4.0 8.10 3.5 5.0 8.40 4.7 6.4 8.81110 2.6 4.3 7.28 3.4 5.4 7.56 4.7 6.5 8.68Glycol Solution DataPropylene Glycol %WaterFlow CapacityMin. Ambient Temp GPM Adjustment= 100% Capacity10% x 1.020 x 0.99 26°F x 1.0120% x 1.028 x 0.98 18°F x 1.0330% x 1.036 x 0.98 8°F x 1.0740% x 1.048 x 0.97 -7°F x 1.1150% x 1.057 x 0.96 -29°F x 1.16Example: 30% glycol solution.Maximum Flow Rate = 12gpm x 1.036System capacity x .98Use Propylene Glycol OnlyImportantIf the outside temperature is expected to fall below freezing (32°F) in the area the Multiaqua chiller is to beinstalled; the installer must take the following precautions. Failure to do so will void the warranty.To not engage in cold ambient mitigation will result in the failure of components such as the heatexchanger, piping, circulating pump, etc… and or property damage.• Keep the liquid solution at a minimum of ten percent propylene glycol even in areas where there is no dangerof freezing.• The percentage amount of glycol recommended is dependent on the expected ambient temperatures and thesolution makeup recommendation of the glycol manufacturer. Refer to the Glycol Solution Data table above.• Ensure the system circulating pump is in a constant energized mode to keep a continuous circulation of liquidsolution.The Multiaqua chiller is a self-contained air-cooled condenser, coupled with an insulated brazed plate heatexchanger (evaporator). The system utilizes a scroll compressor to circulate refrigerant between the condenserand heat exchanger. The refrigerant is metered into the heat exchanger with a thermostatic expansion valve.Protecting the system are high and low pressure switches as well as a pump flow switch.Liquid solution (water and propylene glycol; minimum 10 % is required) is circulated through the heatexchanger by an externally mounted pump. The liquid solution flows through the heat exchanger to the systemsupply piping and on to the air handlers.Low ambient kits are available for operating ambient temperatures down to 0 degrees Fahrenheit. The lowambient kits consist of an ICM 325 (+) ICM (175) for single and three phase 208/230 vac chillers. For the threephase 380/460 vac chillers a pressure activated fan control is used.These specifications are subject to change without notice.49

MAC036 Cooling Performance DataLWT (°F)MAC036 CAPACITIES with 0% GlycolENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 1.70 1.60 1.50 1.40 1.3040 2.30 2.20 2.10 2.10 2.0042 2.60 2.50 2.40 2.40 2.3044 2.90 2.80 2.70 2.70 2.6045 3.10 3.00 2.90 2.80 2.707.2 7.2 7.2 7.246 3.20 3.10 3.00 3.00 2.907.248 3.60 3.50 3.20 3.30 3.2050 3.90 3.80 3.50 3.60 3.5055 4.80 4.70 4.30 4.30 4.2060 5.80 5.60 5.20 5.20 5.00MAC036 CAPACITIES with 10% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 1.68 1.58 1.49 1.39 1.2940 2.28 2.18 2.08 2.08 1.9842 2.57 2.48 2.38 2.38 2.2844 2.87 2.77 2.67 2.67 2.5745 3.07 2.97 2.87 2.77 2.677.2 7.2 7.2 7.246 3.17 3.07 2.97 2.97 2.877.248 3.56 3.47 3.17 3.27 3.1750 3.86 3.76 3.47 3.56 3.4755 4.75 4.65 4.26 4.26 4.1660 5.74 5.54 5.15 5.15 4.95MAC036 CAPACITIES with 20% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 1.67 1.57 1.47 1.37 1.2740 2.25 2.16 2.06 2.06 1.9642 2.55 2.45 2.35 2.35 2.2544 2.84 2.74 2.65 2.65 2.5545 3.04 2.94 2.84 2.74 2.657.2 7.2 7.2 7.246 3.14 3.04 2.94 2.94 2.847.248 3.53 3.43 3.14 3.23 3.1450 3.82 3.72 3.43 3.53 3.4355 4.70 4.61 4.21 4.21 4.1260 5.68 5.49 5.10 5.10 4.90These specifications are subject to change without notice.50

MAC036 Cooling Performance DataMAC036 CAPACITIES with 30% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 1.67 1.57 1.47 1.37 1.2740 2.25 2.16 2.06 2.06 1.9642 2.55 2.45 2.35 2.35 2.2544 2.84 2.74 2.65 2.65 2.5545 3.04 2.94 2.84 2.74 2.657.2 7.2 7.2 7.246 3.14 3.04 2.94 2.94 2.847.248 3.53 3.43 3.14 3.23 3.1450 3.82 3.72 3.43 3.53 3.4355 4.70 4.61 4.21 4.21 4.1260 5.68 5.49 5.10 5.10 4.90MAC036 CAPACITIES with 40% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 1.65 1.55 1.46 1.36 1.2640 2.23 2.13 2.04 2.04 1.9442 2.52 2.43 2.33 2.33 2.2344 2.81 2.72 2.62 2.62 2.5245 3.01 2.91 2.81 2.72 2.627.27.27.27.246 3.10 3.01 2.91 2.91 2.817.248 3.49 3.40 3.10 3.20 3.1050 3.78 3.69 3.40 3.49 3.4055 4.66 4.56 4.17 4.17 4.0760 5.63 5.43 5.04 5.04 4.85MAC036 CAPACITIES with 50% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 1.63 1.54 1.44 1.34 1.2540 2.21 2.11 2.02 2.02 1.9242 2.50 2.40 2.30 2.30 2.2144 2.78 2.69 2.59 2.59 2.5045 2.98 2.88 2.78 2.69 2.597.2 7.2 7.2 7.246 3.07 2.98 2.88 2.88 2.787.248 3.46 3.36 3.07 3.17 3.0750 3.74 3.65 3.36 3.46 3.3655 4.61 4.51 4.13 4.13 4.0360 5.57 5.38 4.99 4.99 4.80These specifications are subject to change without notice.51


MAC048 Cooling Performance DataMAC048 CAPACITIES with 30% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 2.65 2.45 2.35 2.25 2.2540 3.23 3.04 2.94 2.84 2.8442 3.53 3.33 3.23 3.14 3.0444 3.82 3.63 3.53 3.43 3.3345 4.02 3.82 3.72 3.53 3.439.6 9.6 9.6 9.646 4.12 3.92 3.82 3.72 3.539.648 4.41 4.21 4.12 4.02 3.8250 4.70 4.51 4.41 4.31 4.1255 5.59 5.29 5.10 5.10 4.8060 6.47 6.08 5.98 5.98 5.68MAC048 CAPACITIES with 40% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 2.62 2.43 2.33 2.23 2.2340 3.20 3.01 2.91 2.81 2.8142 3.49 3.30 3.20 3.10 3.0144 3.78 3.59 3.49 3.40 3.3045 3.98 3.78 3.69 3.49 3.409.6 9.6 9.6 9.646 4.07 3.88 3.78 3.69 3.499.648 4.37 4.17 4.07 3.98 3.7850 4.66 4.46 4.37 4.27 4.0755 5.53 5.24 5.04 5.04 4.7560 6.40 6.01 5.92 5.92 5.63MAC048 CAPACITIES with 50% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 2.59 2.40 2.30 2.21 2.2140 3.17 2.98 2.88 2.78 2.7842 3.46 3.26 3.17 3.07 2.9844 3.74 3.55 3.46 3.36 3.2645 3.94 3.74 3.65 3.46 3.369.6 9.6 9.6 9.646 4.03 3.84 3.74 3.65 3.469.648 4.32 4.13 4.03 3.94 3.7450 4.61 4.42 4.32 4.22 4.0355 5.47 5.18 4.99 4.99 4.7060 6.34 5.95 5.86 5.86 5.57These specifications are subject to change without notice.53

MAC060 Cooling Performance DataMAC060 CAPACITIES with 0% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 3.90 3.70 3.60 3.50 3.5040 4.50 4.30 4.20 4.10 4.1042 4.80 4.60 4.50 4.30 4.4044 5.10 4.90 4.80 4.70 4.7045 5.30 5.10 5.00 4.80 4.8012.0 12.0 12.0 12.046 5.40 5.20 5.10 5.00 5.0012.048 5.80 5.60 5.40 5.30 5.3050 6.10 5.90 5.70 5.60 5.6055 7.00 6.70 6.40 6.30 6.2060 7.80 7.50 7.30 7.10 7.00MAC060 CAPACITIES with 10% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 3.86 3.66 3.56 3.47 3.4740 4.46 4.26 4.16 4.06 4.0642 4.75 4.55 4.46 4.26 4.3644 5.05 4.85 4.75 4.65 4.6545 5.25 5.05 4.95 4.75 4.7512.0 12.0 12.0 12.046 5.35 5.15 5.05 4.95 4.9512.048 5.74 5.54 5.35 5.25 5.2550 6.04 5.84 5.64 5.54 5.5455 6.93 6.63 6.34 6.24 6.1460 7.72 7.43 7.23 7.03 6.93MAC060 CAPACITIES with 20% GlycolLWT (°F)ENTERING AIR TEMPERATURE (°F)82 95 100 105 110TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM35 3.82 3.63 3.53 3.43 3.4340 4.41 4.21 4.12 4.02 4.0242 4.70 4.51 4.41 4.21 4.3144 5.00 4.80 4.70 4.61 4.6145 5.19 5.00 4.90 4.70 4.7012.0 12.0 12.0 12.046 5.29 5.10 5.00 4.90 4.9012.048 5.68 5.49 5.29 5.19 5.1950 5.98 5.78 5.59 5.49 5.4955 6.86 6.57 6.27 6.17 6.0860 7.64 7.35 7.15 6.96 6.86These specifications are subject to change without notice.54


MAC 036, 048 & 060 Chiller Pump CurvePump Model NumbersSSP-1 = 208/230-1-50/60SSP-2 = 208/230/460-3-50/600.5 Horsepower56

Table of ContentsPageIntroduction 59System Description & Sequence of Operation 60Electrical & Physical Data 61Description of Electrical Controls 63Chiller Controls Sequence of Operation 65Refrigeration System Operation 66Description of Refrigeration Components 66Piping System Components 68Layout & Design 69Banked Chiller Configuration 69Installation Notes 71Propylene Glycol Content 72Expansion Tank 72Filling the System with Propylene Glycol 73Air Elimination 7358

Multiaqua Chiller ManualThe Multiaqua Chiller System is the only air conditioning/refrigeration system of its kind in the worldtoday offering the degree application flexibility described in the following manual.The Multiaqua Chiller System is not only unique in its application flexibility; it is unique in superiorquality, rated capacities and rugged durability. When installed in accordance with these instructions thesystem will deliver years of trouble free service.Proper equipment sizing, piping design and installation are critical to the performance of the chiller. Thismanual is meant to be a “how to” introduction to piping and installing the Multiaqua Chiller System.MAC036, 048 & 060 Chiller Features• Copeland Scroll Compressors• Stainless Steel Pump• Advanced Motor Protection• Loss of Flow Protection• Control Power Transformer• Low Ambient Option• Integrated Chilled Solution Pump Control• Flow Switch• Strainer Connection Kit• Painted Metal Condenser Protector Grille• Single Refrigeration Circuits and Single Liquid Solution CircuitRECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY ORINSTRUCTION RELATED INFORMATION.Web site information addresses are supplied throughout this manual for piping and accessory information.The plumbing industry also has pressure drop information on ferrous and copper piping systems.The following sections will describe each component and how it functions within the system. Installationinformation is supplied where appropriate. The piping design section will explain the design and layoutthe piping system from a “how to” perspective. Following the examples provided will enable the installerto determine the correct pipe and accessory sizing, as well as equipment location. It is important to knowbefore installation if the proposed system will operate correctly and by doing a formal layout of a newapplication or review of an existing piping system will make that determination.Throughout this manual the term “liquid solution” is used in place of water. The chiller circulates asolution of water and Propylene Glycol.It is essential to operate the system with a minimum of 10% glycol. DO NOT OPERATE THISSYSTEM USING WATER ALONE.For proper liquid solutions mix ratios, refer to table 6, page 72 or the glycol manufacture’s recommendedmix ratios.59

System Description & Sequence of OperationThe Multiaqua Chiller is a self-contained, air-cooled condenser, coupled with an insulated brazed plateheat exchanger (evaporator). The system utilizes a scroll compressor to circulate refrigerant between thecondenser and heat exchanger. The refrigerant is metered into the heat exchanger with a thermostaticexpansion valve. Protecting the system are high and low pressure switches as well as a pump flow switch.Liquid solution (water and propylene glycol) is circulated through the heat exchanger by a factorysupplied internal pump. The liquid solution flows through the heat exchanger to the system supply pipingand on to the air handlers.A solenoid-operated, motorized valve or circulator controls the flow of the chilled liquid solution throughthe air handlers. The valves or circulators can be actuated by a variety of different control schemes.Liquid solution temperature is controlled by a chiller mounted digital electronic controls. A systemsequence of operation, individual control description, troubleshooting information and a schematic areincluded in the controls section.It must be recognized that ferrous pipe may cause acceleration deterioration of the brazedplate heat exchanger and could void the heat exchanger warranty.Cooling Diversity LoadEquipment sizing for a chilled liquid solution system can utilize Cooling Load Diversity. Diversity isdescribed as the actual amount of cooling needed (heat load) by various sections of a structure at a giventime. Conventional air conditioning systems are designed for the highest structure heat load. Theconventional system determines and selects equipment based on the peak heat load demanded by thestructure. A system sized to take advantage of diversity would determine the heat load by the time of day,building exposure and usage. As an example the sections of a structure facing west, demand more coolingin the afternoon, than sections facing east. The opposite of this is true in the morning, where the eastsection is exposed to a higher heat load requiring more cooling. Utilizing diversity the chiller systemwould adapt to the needs of each side of the structure during peak demand by delivering more cooling tothat area and less to the areas that do not need it. A structure utilizing a conventional DX system, requires8 tons of cooling at peak load, could utilize a much smaller capacity system (potentially 4 or 5 tons) if thesystem installed could take advantage of load diversity, which would supply the necessary amount ofcooling to the space, as and when needed instead of keeping a larger capacity available at all times.Cooling load diversity can best be determined by referring to ACCA. (Air Conditioning Contractors ofAmerica) Manual “J”, Refer to the appendix A-2, Multi-Zone Systems. ACCA’s Internet address ishttp://www.acca.org/Because of diversity a Multiaqua Chiller can serve more total air handler tonnage than chiller capacity.For example, a 5-ton chiller may be delivering chilled liquid solution to 7 or more tons of air handlercapacity. Because of cooling load diversity, the building does not need equal amounts of cooling in eacharea at the same time.60

ELECTRICAL AND PHYSICAL DATAThe information contained in this manual has been prepared to assist in the proper installation, operationand maintenance of the chiller. Improper installation, or installation not made in accordance with theseinstructions can result in unsatisfactory operation and/or dangerous conditions and can cause the relatedwarranty not to apply.Read this manual and any instructions packaged with separate equipment required to make up the systemprior to installation. Retain this manual for future reference.Separate and independent power supplies and disconnects must be provided. These chillers haveseparate and discreet power requirements within one cabinet.All power to the chiller must be turned off prior to opening cabinet and or servicing.Failure to properly ground chiller can result in death.Disconnect all power wiring to chiller before maintenance or service work. Failure to do so cancause electrical shock resulting in personal injury or death.All wiring must be done in accordance with the NEC (National Electric Code) as well as state andlocal codes, by qualified electricians.Product warranty does not cover any damages or defect to the chiller caused by the attachment oruse of any components, accessories or devices (other than those authorized by the manufacturer) into,onto or in conjunction with the chiller. You should be aware that the use of unauthorized components,accessories or devices may adversely affect the operation of the chiller and may also endanger life andproperty. The manufacturer disclaims any responsibility for such loss or injury resulting from the use ofsuch unauthorized components, accessories or devices.Upon receiving the chiller and components, inspect for any shipping damage. Claims for damage,either apparent or concealed should be filed immediately with the shipping company.No liquid other than the solution of water and propylene glycol (mixed in accordance with table6) shall be used in the piping system.Corrosive environments may subject metal parts of the chiller to rust and deteriorate. Theoxidation could shorten the chiller’s useful life. Corrosive elements include salt spray, fog or mist in seacoastal areas, sulfur or chlorine from lawn watering systems and various chemical contaminants fromindustries such as paper mills and petroleum refineries.If the unit is to be installed in an area where contaminates are likely to be a problem, special attentionshould be given to the equipment location and exposure.• Avoid having lawn sprinklers spray directly on the chiller cabinet.• In coastal areas, locate the chiller on the side of the building away from the water front.• Elevating the chiller off of its slab or base enough to allow air circulation will help avoid holding waterin contact with the cabinet base.• Regular maintenance will reduce the build-up of contaminants and help protect the cabinet finish.• In severe locations having the chiller coated with an “epoxy” or other coating formulated for airconditioning systems located in coastal areas may be necessary.61

Consult local building codes or ordinances for special installation requirements. Whenselecting a site to locate the chiller, consider the following:• A minimum clearance of 60” on the front fan discharge, 12” on the rear air inlet and a 24” clearanceis required on the service side.• The chiller can be located out or indoors. If installed indoors there must be 4500 cfm of outdoor airchanges circulated through the mechanical room to sufficiently operate the chiller. No ductwork can beconnected to the chiller’s condenser or condenser fans.• If a concrete slab is used, do not connect the slab directly to any building’s foundation or structure toprevent sound transmission.• Locate the slab on a level surface that is above grade to prevent ground water from entering the chillercabinet.Stated Service Clearances12” Rear Clearance60” Front Fan Discharge Clearance24” Side Service ClearanceReturnLiquidSolutionConnectionServiceAccessElectricalConnectionSupplyLiquidSolutionConnection62

Description of Electrical ControlsControl Transformer: The control transformer is rated at 24 vac, 40 va(1.6 amps @ 24vac)Pump Bypass Timer: The pump bypass timer is a 24 vac, 3-wire control.When energized the timer will bypass the flow switch for 10 seconds (bycreating a circuit to the pump relay), energizing the pump relay, allowing thepump to operate long enough to close the flow switch. In a normally operatingsystem the flow switch will stay closed powering the pump relay in series withthe low and high- pressure switches. Should the flow switch open, the timercan only be reset by opening and closing the chiller's line voltage disconnect.Refrigerant System Timer: The refrigerant timer is a 24 vac, 5-minute delayon break, 20wire timer. The normally closed contacts of the timer energizethe compressor contactor through the chilled solution control. When the chilledsolution control contacts open, the timer delays by opening its contact for 5-minutes before resetting to the closed position.High Pressure Switch: The high-pressure switch is an automatic reset controlthat senses compressor discharge line pressure. It opens at 400 PSIG andcloses at 300 PSIG.63

Description of Electrical Controls (continued)Low Pressure Switch: The low-pressure switch is an automatic reset controlthat senses compressor suction line pressure. It opens at 40 PSIG andcloses at 80 PSIG.Flow Switch: The flow switch senses liquid solution flow. The paddle of theswitch is inserted through a fitting into the pump discharge line. Liquid solutionflow deflects the paddle closing the switch. The flow switch is position sensitive.The arrow ↑ on the switch must point in the direction of liquid solution flow.Compressor Contactor: The compressor contactor energizes the compressorthrough the two or three normally open contacts. The contactor coil operates(closes the contacts) when energized by 24 vac.Pump Relay / Contactor: The pump relay energizes the pump through a normallyopen contact. The pump relay coil operates (closes the contact) when energizedby 24 vac.64

Description of Electrical Controls (continued)Liquid Solution Temperature Control: The liquid solution temperature controlis an adjustable microprocessor based temperature control. This control receivestemperature information from a thermistor located on the liquid solution supplyline. A liquid crystal display continually indicates liquid solution temperature. Thecontrol is mounted inside the chiller cabinet.Chiller Controls Sequence of OperationWhen powered up the Multiaqua chiller system energizes the control transformer creating 24 vac control voltage.First the pump bypass timer is energized and temporarily bypasses the flow switch, energizing the pump relay. Thepump then starts to move liquid solution through the piping system (in a properly filled and air purged system). Themovement of liquid solution from the pump discharge keeps the flow switch closed. After a 10 second delay the pumpcontact opens, connecting the flow switch in series with the high and low pressure switches. The pump will now runcontinually unless the power supply is interrupted, or the flow switch opens.If the liquid solution temperature controller is calling for cooling the control circuit is routed through the short cycletimer and the three safety switches (the flow, high and low pressure switches) to the compressor contactor. This willenergize the compressor(s) and condenser fan motors. The liquid solution controller will open at the user programmedset point, causing the refrigerant short cycle timer to open it's contact for 5 minutes as it delays before resetting to theclosed position. This will de-energize the compressor. Power fluctuations will also initiate a 5 minute time delay. The5 minute delay allows the refrigerant system a period for pressure equalization, protecting the compressor(s) fromshort cycling.The chiller temperature controller utilizes a thermistor to monitor the liquid solution temperature change. Thetemperature is then compared to the set point and differential temperatures programmed into the control by the user.The set point is the liquid solution temperature which will cause the control switch to open. For example: The controlset point is programmed at 44°F LWT with a 10°F differential, which opens the controller at 44°F LWT and closes at54°F. The differential temperature is the number of degrees above set point temperature programmed into thecontroller. If liquid solution temperature falls to the set point, the controller cycles the compressors off.Chillers are shipped with the control set point adjusted to 44°F LWT and a 10°F differential. Liquid solutiontemperature set point should not be set below 35°F.65

SYSTEM FAULTS:Flow Switch Opening: The flow switch is normally closed during pump operation. Should liquid solution flow beinterrupted for any reason the control will open shutting down and locking out the chiller operation. The only exceptionto this is when power is first applied to the chiller and the pump bypass timer bypasses the flow switch for 10 seconds.When the system is first filled with liquid solution and the pump is started, expect the system to cycle off on thflow switch, until all of the air is removed from the piping system. The system will have to be reset by openingand then closing the disconnect switch or circuit breaker powering the chiller.Low Pressure Switch Opening: Should the compressor suction pressure go low enough (40 PSI) to open the lowpressureswitch, the compressor and condenser fan motors will shut down. Check for a refrigerant leak, inoperativethermal expansion valve, low liquid solution control setting, low ambient operation, low liquid solution flow, etc.High Pressure Switch Opening: Should the compressor discharge pressure go high enough to open the high- pressureswitch, the compressor and condenser fan motors will shut down. Check for a dirty condenser coil, inoperable fan motor(s)or the recirculation of condenser air.Refrigeration System OperationThe refrigeration system is a closed loop consisting of 1 compressor, single circuit heat exchanger (evaporator), meteringdevice (TXV) and condenser coil. The refrigerant circulated is R407c. Hot gas is pumped from the compressors to theto the condenser coil where the two condenser fans pull cooler air across the coil condensing and sub cooling the refrigerant.The now liquid refrigerant flows through the liquid line to the thermal expansion valves, where the refrigerant pressuredrops causing the refrigerant to boil at a much lower temperature (34-40°F). The refrigerant leaves the expansion valves andswirls through the plates of the heat exchanger absorbing heat from the circulating liquid solution.The evaporator or heat exchanger is designed to operate with an 8-10°F superheat. The condenser is designed tocondense the refrigerant and sub cool it to 10°F below condensing temperature.Description Of Refrigerant ComponentsScroll Compressor: All Multiaqua chillers feature Scroll compressors. Scrolltechnology ensures reliable high performance at a low sound level over a wide rangeof operating conditions.Caution the top half of the scroll compressor operates at a temperature highenough to cause serious injury.66

Description Of Refrigerant Components (continued)Brazed Plate Heat Exchanger: The "Heat Exchanger" or evaporator is of abrazed copper and stainless steel design. Refrigerant and liquid solution is channeledthrough narrow openings between plates and flows in opposite directions. The counterflow design and fluid turbulence ensures maximum heat exchange at minimal pressuredrop.Thermal Expansion Valve: Multiaqua chillers are equipped with Thermal Expansionvalves. The valves feature a liquid charged sensing bulb for consistent superheat atvarious load conditions.Condenser Coil: The air-cooled condenser coil is of copper tube with aluminum finconstruction. The coil is protected by a painted metal condenser grille.67

Piping System ComponentsSupply Storage Tank: The supply storage tank must be used in the system with lessthan 25 gallons of liquid solution. The tank prevents rapid cycling of the compressorsand acts as a reserve for chilled liquid solution.Supply storage tank must be insulated in the field.Part Number: WX202H (20 Gallon)WX202H (42 Gallon)Expansion Tank and Air Scoop: The Expansion Tank and Air Scoop assembly isused to compensate for the expansion and contraction of liquid in the system. Theair scoop eliminates air entrance in the liquid solution.Part Number: 1500/1"Liquid Solution Bypass Valve: The liquid solution bypass valve relieves systempressure from the liquid solution supply to the return as system air handler controlare cycled off.Part Number: D146M1032- 3/4"D146M1040- 1 1/4"Motorized Valve: The air handler motorized valve controls the flow of liquid solution'to the systems air handlers. Each air handler in the system should have a motorizedor solenoid valve.Part Number: MZV524E-T 1/2" 2-Way Zone ValveMZV525E-T 3/4" 2-Way Zone ValveMZV526E-T 1" 2-Way Zone ValveVT3212G13A020 1/2" 3-Way Zone ValveVT3212G13A020 3/4" 3-Way Zone Valve68

Composite Piping Layout and DesignUnderstanding the function and friction loss of each part of the piping system is important to the layout and successfulinstallation of a chilled liquid solution system.1-2-3-4-5-6-7-The circulation pump is the key performer in the piping system. The pump must circulate the liquid solution through theheat exchanger and piping system to the air handlers. Pumps are designed to deliver a flow rate measured in gallonsper minute(GPM). The pump must be able to overcome the resistance to flow (pressure drop) imposed by the chillercomponents, piping system and air handlers while maintain the necessary flow rates in gallons per minute. Pumpcapacities in gallons per minute and pressure drop (feet of head) are listed in table 1.Banked Chiller Configuration2-Way Liquid Solution Control ValvesBypass ValveStorage TankExpansion TankCoilChillerPumpNotes:Installing Multiaqua chillers in parallel is recommended.69

An adjustable valve must be used to throttle the discharge liquid solution flow rate to appropriate levels basedon capacity and glycol mix percentages.CompressorRefrigerantHeat ExchangerMax.Head PressureMax Flow rateMin Flow RateSupply Water TempReturn Water TempMin Solution ContentExpansion Tank SizePumpWater ConnectionsInternal Pressure LossMAC036Copeland ScrollR407cBrazed Plate50 ft8.6 gpm5.5 gpm44°55°25 Gallons2 Gallons0.5 HP1" Supply & 1.25 Return1.77 ft of hdMAC048Copeland ScrollR407cBrazed late50 ft11.5 gpm6.5 gpm44°55°25 Gallons2 Gallons0.5 HP1" Supply & 1.25" Return1.68 ft of headMAC060Copeland ScrollR407cBrazed Plate50 ft14.4 gpm9.0 gpm44°55°25 gallons2 Gallons0.5 HP1"Supply & 1.25" Return1.68 ft of headPiping resistance or pressure drop is measured in feet of head. A foot of head is the amount of pressure drop imposedin lifting liquid solution one foot. Pumps in the Multiaqua system are designed to move rated liquid solution flowin GPMs.70

Installation Notes:Piping such as PEX, steel, copper or PVC can be used with the Multiaqua system. Check local building codes formaterial conformation. Care must be taken when using PVC as the presence of propylene glycol may destroyplastics. Pressure drop data for the selected piping material is readily available and should be used. Should theMultiaqua chiller be installed using existing steel (ferrous metal) piping system, dielectric fittings must be usedat the chiller and air handler. The factory supplied wye strainer will capture particles of rust and sedimentinherent with steel piping and should be checked and cleaned after initial start up and open a regular maintenanceduring the life of the system.Any piping used to conduct liquid solution must be insulated in accordance with local and national mechanicalcodes. Information on insulation installation and application can be obtained from Armaflex web site atwww.armaflex.com and Owens-Corning site at www.owenscorning.com/mechanical/pipe/. For future servicingof the chiller and air handlers, it is suggested that shutoff valves be installed at the chiller and air handler (s). Ifball valves are used, they can double as balancing valve (s) in the supply piping at each air handler. Chillershutoff valves should be attached at the chiller connections with unions.The air handlers are to be controlled with electrically operated "slow-opening" solenoid valves, circulators ormotorized zone valves as manufactured by Erie controls (www.eriecontrols.com/products/index.htm) A remotethermostat or air handler installed digital control operates the valves.Bypass valves as shown in drawing 1, should be installed between the supply and the return chilled liquidsolution supply pipes at a convenient location to the installation. The bypass valve operates to bypass liquid solutiobetween the supply and return chilled liquid solution lines. In the event air handlers valves should shut down, thebypass valve is set to open up and bypass liquid solution between the supply and return lines, relieving pressureand eliminating the possibility of pump cavitations. To adjust the valve, run the system with one air handlersolenoid actuated. De-energize the solenoid valve, (at this point no liquid solution will be flowing through the airhandlers.) and adjust the bypass valve to relieve pressure between the supply and return piping.Bleed ports will be factory installed on all Multiaqua air handlers. Bleed ports are opened to eliminate air trappedin the air handlers after filling the system with liquid solution and Propylene Glycol, and before operating therefrigerant compressor in the chiller.The minimum liquid solution content in the chiller system, (piping, chiller, and air handlers), is 25 U.S. gallons.Estimate the system liquid solution content. Should the system have less than 50 gallons of liquid solutioncontent, a chilled liquid solution storage tank must be installed. The tank stores enough chilled liquid solutionto prevent frequent chiller compressor cycles at light load and prevents chilled liquid temperature swings athigher load conditions when the chiller compressor is waiting to cycle on the time delay control.Propylene Glycol must be added to the water used in the system. Propylene helps prevent freeze-ups due tolow ambient temperature conditions and low chilled liquid solution temperatures. In comparison to water,Propylene Glycol slightly lessons the temperature exchange in the chiller heat exchanger. However, that isoffset by the increased flow of liquid solution through the piping system enabled by the Propylene Glycol. Todetermine the Propylene Glycol content for various ambient temperatures refer to table 6 page 72.In no instance should a Multiaqua chiller be installed with less than 10% Propylene Glycol content in the pipingsystem. Using less than the recommended Propylene Glycol percentage content voids equipment warranty.71

To not engage in cold ambient mitigation will result in the failure of components, property damage andvoid warranty.Table 6Polypropylene Glycol System Content vs.Minimum Ambient TemperaturePropylene Water Min. AmbientCapacityGlycol % Flow Temperature10% x 1.020 x .99 26°F20% x 1.028 x .98 18°F30% x 1.036 x .98 8°F40% x 1.048 x .97 -7°F50% x 1.057 x .96 -29°FGPM Adjustment= 100 % Capacityx 1.01x 1.03x 1.07x 1.11x 1.16Ethylene Glycol is environmentally hazardous and not recommended. Inhibited Propylene Glycol ( typicalautomotive coolant) is not to be used in a Multiaqua Chiller under any circumstances. Dow Chemical's "Ambitrol"family of Glycol-based coolants of food grade Propylene Glycol is suggested. Information on Ambitrol is availablefrom Dow at www.dow.com, search word "Ambitrol".Expansion Tanks:Liquid solution expansion and contraction within the closed system must be compensated for with an expansiontank. The expansion tank used with the Multiaqua system, is a steel tank with a rubber bladder attached to itinternally. There is air pressure on one side of the rubber bladder that keeps the bladder pushed against thesides of the tank before the system is filled with liquid solution (illustration above). As the liquid solution heatsup the bladder, will be pushed further away from the tank walls, allowing for expansion and contracting as theliquid solution temperature changes. By flexing, the bladder controls the system pressure adjusting totemperature variations of the chilled liquid solution system.It is critical that the expansion tank's air bladder pressure be less than the system solution pressure. Airpressure can be measured with an automotive tire gauge at the bicycle valve port on the expansion tank. Bleedingair out of the bladder or increasing the pressure with a bicycle pump will adjust pressure.System must use a liquid solution storage tank if system volume is less than 50 U.S. gallons.72

Filling System with Liquid Solution and Coolant(Propylene Glycol)Concentrations of Propylene Glycol in excess of 50% will destroy o-rings in fittings and pump. Water shouldbe added to the system first or a liquid solution diluted Propylene Glycol mix.Before filling system with Propylene Glycol and water, pressure test the piping system with compressed air.Testing should be done at a minimum of 50 psi but no greater than 50 psi over the system's normal operatingpressure. The system should hold air pressure for a minimum of one hour with no leakage.System that contains 50 or more U.S. gallons should have a tee fitting with a stopcock installed in the returnline close to the chiller. The stopcock can be opened and attached to a hose with a female X female hosefitting. In the open end of the hose section (1 -1.5 feet long) insert a funnel and pour into the system thediluted Propylene Glycol/liquid solution mixture or add water first and then the quantity of Propylene Glycolneeded for minimum ambient protection (refer to Table 6). After adding the Propylene Glycol /water mixture, orliquid solution and then coolant proceed to add enough water to the system to achieve a 15 psi gauge pressure.To measure system pressure shut off the stopcock, remove hose and attach a water pressure gauge. Openthe stopcock to read system pressure.Systems that use the Chilled Liquid Solution Storage Tank should be filled at the tee/stopcock fitting in theoutlet fitting of the storage tank. Fill the tanks with 10 gallons of water and with a funnel pour the calculated(refer to Table 6) amount of Propylene Glycol into the tank. The amount of Propylene Glycol added should becalculated to achieve minimum ambient protection. After adding Propylene Glycol, fill the system with enoughliquid solution to bring system pressure to approximately 15 psi gauge pressure. To measure system pressureshut off the stopcock and attach a water pressure gauge. Open the stopcock to read system pressure.Air EliminationSince we have the system filled we must eliminate the air left in the system. Briefly open each bleed valve atthe air handlers and allow trapped air to escape. This will eliminate much of the air left in the system.Next we will start the pump and continue bleeding air from the system. Be sure the chiller has line voltageavailable to it and set the chilled liquid solution control up to 100°F, which will ensure that only the pump runsat this point. The pump should now start and remain running. Should the pump stop at any time during thisprocess it is an indication that the flow switch had air move across it allowing the circuit to be interrupted.Continue to bleed some air out of the system at the highest locations before resetting the pump bypass timerto get the pump running again. Open and close the power supply switch to the chiller to restart the pump.Continue bleeding air with the pump operating. You may have to start and re-start the pump a few times tocomplete air removal.All piping systems should have a minimum of 10% Propylene Glycol in the system even in climates with nonfreezingambient temperatures.Using less than the recommended Propylene Glycol percentage content voids equipment warranty.Liquid solution control valves (solenoid or motorized valves) should be selected for low pressure drop. If a selectedvalve contributes to pushing your total head calculation to more than 50 feet of head, a larger valve may beneeded to bring your total head below the maximum of 50 feet.Liquid Solution Balancing:Liquid solution balancing will require an accurate digital thermometer to measure return line liquid solutiontemperature at each air handler. Set the chilled liquid solution temperature control in the chiller at a normaloperational temperature (44°F) and measure pump discharge temperature with the digital thermometer to checksystem solution temperature. After the chilled liquid solution temperature has lowered to the set point begin thebalancing process. The system must be free of air and each air handler set at a temperature low enough tocontinue cooling operation (and liquid solution flow) during the balancing process. Begin by measuring the returnline chilled liquid solution temperature of each air handler. Begin incrementally closing the supply line balancevalve at the air handlers with the lowest return line chilled liquid solution temperature. Continue this processuntil each air handler has close to the same return line chilled liquid solution temperature.73




MAC036, 048 & 060-2 Ladder Wiring Diagram208/230-3-50/6077

MAC036, 048 & 060-2 Wiring Diagram208/230-3-50/6078

MAC036, 048 & 060-2-L with Low Ambient Kit Wiring Diagram208/230-3-50/6079

MAC036, 048 & 060-1 Ladder Wiring Diagram208/230-1-50/6080

MAC036, 048 & 060-1 Wiring Diagram208/230-1-50/6081

MAC036, 048 & 060-1-L with Low Ambient Kit Wiring Diagram208/230-1-50/6082

MAC036, 048 & 060 CERTIFIED DRAWING83

MHCCW Chilled Water Ceiling ConcealedWith or Without Electric Heat2-Pipe Heat / Cool Fan Coil 12,000 - 36,000 BTUH84

MHCCW NOMENCLATURE BREAKDOWN2-Pipe Heat/Cool Ceiling Concealed Fan Coil with Electric HeatMHCCW XX - XX - XXVoltage "See Notes"00= 208/230-1-50/6003= 120-1-602-Pipe Heat/Coolw/ Electric HeatElectric Heat00= 0 KW02 =2KW "See Note 2 & 3"03= 3 KW05= 5 KW06= 6 KWNominal CFM 08= 8 KW04 = 1 TON06 = 1.5 TON08 = 2 TON10 = 2.5 TON12 = 3 TONNotes:1. The standard unit is 208/230-1-50/60 vac. Add suffix 03 for 120-1-50/60 vac units.2. 120 vac units are available without electric heat or 2kw of electric heat.3. 2 KW electric heat is only available with 120 vac.Available Model NumbersMHCCW04-00-03 MHCCW06-00-03 MHCCW08-00-03 MHCCW10-00-03 MHCCW12-00-03MHCCW04-02-03 MHCCW06-02-03 MHCCW08-02-03 MHCCW10-02-03 MHCCW12-02-03MHCCW04-00 MHCCW06-00 MHCCW08-00 MHCCW10-00 MHCCW12-00MHCCW04-03 MHCCW06-03 MHCCW08-03 MHCCW10-03 MHCCW12-03MHCCW04-05 MHCCW06-05 MHCCW08-05 MHCCW10-05 MHCCW12-05MHCCW04-06MHCCW04-08MHCCW06-06MHCCW06-08MHCCW08-06MHCCW08-08MHCCW10-06MHCCW10-08MHCCW12-06MHCCW12-0885

HVAC Guide SpecificationsChilled Water Fan Coil with Electric Heat2-PipeNominal Size:12,000 – 36,000 BTUHMultiaqua Model Number:MHCCW04MHCCW06MHCCW08MHCCW10MHCCW12Part 1-General1.01 System DescriptionMultiaqua Chilled Water Fan Coils are manufactured with heavy gauge galvanized steel to resist corrosion.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested chilled or hot water fan coil with electric heat.2. Shall be assembled with heavy gauge galvanized steel.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.D. Blower Wheels:1. Blower wheels are forward curved and dynamically balanced.E. Water Coil:1. Manufactured with 3/8” copper tubing mechanically bonded to aluminum fins.2. Contain both a manual water drain and air bleed port.3. Coils shall be factory tested to 350 psig.4. Coils shall be capable of being field converted from right to left hand connection.F. Drain Pan:1. All drain pans shall be coated on both the interior and exterior with baked polyester powder toresist corrosion.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a left and right hand primary sloped drain connection as well as a right handsloped secondary drain connection.86

G. Electric Heat:1. Electric Heaters shall be of the rod and disk type.2. Shall be protected by safeties.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. All components shall be wired to an internal terminal block to allow for a field installed thermostat and orFan speed control.C. Controls shall include the following components.1. 24vac transformer.2. Fan relays.3. Electric heat sequencer (s).4. Optional Thermostats.3.02 SafetiesA. Fan coil shall be equipped with all necessary components in conjunction with thecontrol system to provide the following protectants.1. High temperature.2. Over current protection.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Primary electrical power supply shall enter the unit at a single location.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.D. Control and high voltage points shall be accessed through terminal block.Part 5- Accessories:5.01 EnclosuresA. Fan coils shall be capable of incorporating enclosures.1. Enclosures shall be internally insulated to insure quite operation and increase efficiency.2. Shall include knockouts for ease of piping and electrical in and out of the enclosures.3. Shall include an optional return air cutout in the enclosure.4. Shall include a supply air duct flange.5. Shall incorporate baked polyester powder service access panels with and without a filtered louver.87

ModelNumberHeight(in)MHCCW Product SpecificationsWidth(in)Depth(in)Physical DataWeight(lbs)88CoilRowsFPICopperDiameter(in)WaterInlet (in)WaterOutlet(in)MHCCW04 10.25 37.72 21.65 66.0 2-14 3/8 5/8 5/8 3/4MHCCW06 10.25 37.72 21.65 68.2 3-14 3/8 5/8 5/8 3/4MHCCW08 10.25 37.72 21.65 72.6 4-14 3/8 5/8 5/8 3/4MHCCW10 10.25 43.70 21.65 74.8 4-14 3/8 7/8 7/8 3/4MHCCW12 10.25 49.68 21.65 83.6 4-14 3/8 7/8 7/8 3/4Model NumberNominalCFMVoltsPhaseHertzElectrical DataElectricHeat(KW)Motor HPThese specifications are subject to change without notice.Full LoadAmpacityDrain(in)Fuse or HACR CircuitBreaker Per CircuitMinimumAmpsMaximumAmpsMHCCW04-00 0 0.82 1.03 3MHCCW04-03 3 13.86 19.31 20MHCCW04-05 4005 1/8 22.56 31.6 35MHCCW04-06 6 26.9 37.6 40MHCCW04-08835.6 48.3 50MHCCW06-00 0 1.18 1.48 3MHCCW06-03 3 14.22 19.76 20MHCCW06-05 6005 1/8 22.92 32.05 35MHCCW06-06 6 27.27 38.05 40MHCCW06-08835.96 48.75 50MHCCW08-00 0 1.43 1.8 4MHCCW08-03 3 14.47 20.08 20MHCCW08-05 8005 1/4 23.17 32.36 35MHCCW08-06 6 27.52 38.36 40MHCCW08-08836.21 49.06 50MHCCW10-00 0 1.43 1.8 4MHCCW10-03 3 14.47 20.08 20MHCCW10-05 10005 1/4 23.17 32.36 35MHCCW10-06 6 27.52 38.36 40MHCCW10-08836.21 49.06 50MHCCW12-00 0 1.81 2.26 5MHCCW12-03 3 14.85 20.55 20MHCCW12-05 12005 1/4 23.55 32.84 35MHCCW12-06 6 27.9 38.84 40MHCCW12-08836.6 49.54 50Model NumberNominalCFM208/230-1-50/60VoltsPhaseHertzElectricHeat(KW)MotorHPFull LoadAmpacityFuse or HACR CircuitBreaker Per CircuitMinimumAmpsMaximumAmpsMHCCW04-00-03 400 0 1/30 0.55 .69 1.25MHCCW06-00-03 600 0 1/30 0.55 .69 1.25MHCCW08-00-03 800 0 1/30 0.55 .69 1.25MHCCW10-00-03 1000 0 1/8 1.80 2.25 5MHCCW12-00-03 1200120-1-600 1/4 3.00 3.75 10

MHCCW Chilled Water Performance DataNOMINALCFMEWT(°F)400 42MHCCW04 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 11.8 9.01.5 4.4 SC 8.9 7.8WTR 15.7 12.0TC 13.4 10.22.0 7.2 SC 9.5 8.3WTR 13.4 10.2TC 14.3 11.02.5 10.7 SC 9.8 8.6WTR 11.5 8.8TC 15.1 11.53.0 14.7 SC 10.1 8.8WTR 10.1 7.7MHCCW04 COOLING CAPACITIESNOMINALCFMEWT(°F)400 45GPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 10.5 8.31.5 4.4 SC 8.5 7.5WTR 14.4 11.0TC 12.3 9.42.0 7.2 SC 9.1 8.0WTR 12.3 9.4TC 13.2 10.02.5 10.7 SC 9.4 8.2WTR 10.5 8.0TC 13.8 10.63.0 14.7 SC 9.6 8.4WTR 9.2 7.0These specifications are subject to change without notice.89

MHCCW Chilled Water Performance DataNOMINALCFMEWT(°F)600 42MHCCW06 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 18.5 14.13.0 3.8 SC 13.4 11.7WTR 12.3 9.4TC 20.4 15.64.0 6.5 SC 14.1 12.3WTR 10.2 7.8TC 21.6 16.55.0 9.8 SC 14.5 12.6WTR 8.6 6.6TC 22.4 17.16.0 13.8 SC 14.8 12.9WTR 7.5 5.7NOMINALCFMEWT(°F)600 45MHCCW06 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 17 13.03.0 3.8 SC 12.8 11.2WTR 11.3 8.6TC 18.7 14.34.0 6.5 SC 13.4 11.8WTR 9.4 7.2TC 19.8 15.15.0 9.8 SC 13.8 12.1WTR 7.9 6.0TC 20.6 15.76.0 13.8 SC 14.1 12.3WTR 6.9 5.2These specifications are subject to change without notice.90

MHCCW Chilled Water Performance DataNOMINALCFMEWT(°F)800 42MHCCW08 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 22.7 17.33.0 3.9 SC 17.5 15.4WTR 15.1 11.5TC 25.9 19.74.0 6.5 SC 18.6 16.3WTR 12.9 9.9TC 28 21.45.0 9.6 SC 19.5 17.0WTR 11.2 8.6TC 29.4 22.56.0 13.3 SC 20.0 17.4WTR 9.8 7.5NOMINALCFMEWT(°F)800 45MHCCW08 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 20.8 15.93.0 3.9 SC 16.6 14.7WTR 13.9 10.6TC 23.4 17.94.0 6.5 SC 17.6 15.5WTR 11.7 8.9TC 25.1 19.25.0 9.6 SC 18.2 16.0WTR 10.0 7.7TC 26.4 20.16.0 13.3 SC 18.7 16.3WTR 8.8 6.7These specifications are subject to change without notice.91

MHCCW Chilled Water Performance DataNOMINALCFMEWT(°F)1000 42MHCCW10 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 28.8 22.04.0 4.9 SC 21.9 19.3WTR 14.4 11.0TC 31.8 24.35.0 7.4 SC 23 20.1WTR 12.7 9.7TC 33.9 25.96 10.5 SC 23.8 20.8WTR 11.3 8.6TC 35.5 27.17.0 14.1 SC 24.4 21.3WTR 10.2 7.8NOMINALCFMEWT(°F)1000 45MHCCW10 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 26.4 20.24.0 4.9 SC 21.0 18.6WTR 13.2 10.1TC 29.2 22.35.0 7.4 SC 22.0 19.4WTR 11.7 8.9TC 31.1 23.86 10.5 SC 22.8 19.9WTR 10.4 7.9TC 32.6 24.97.0 14.1 SC 23.3 20.4WTR 9.3 7.1These specifications are subject to change without notice.92

MHCCW Chilled Water Performance DataNOMINALCFMEWT(°F)1200 42MHCCW12 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 32.3 24.74.0 5.6 SC 25.4 22.4WTR 16.2 12.4TC 36.1 27.65.0 8.5 SC 26.8 23.5WTR 14.4 11.0TC 38.9 29.76 12.0 SC 27.8 24.3WTR 13 9.9TC 40.9 31.27.0 16.1 SC 28.6 24.9WTR 11.7 8.9NOMINALCFMEWT(°F)1200 45MHCCW12 COOLING CAPACITIESGPMPRESSURE ENTERING AIR TEMPERATURE (°F)DROP (ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 29.7 24.64.0 5.6 SC 24.4 20.6WTR 14.8 12.3TC 33.1 25.35.0 8.5 SC 25.7 22.6WTR 13.3 10.1TC 35.7 27.26 12.0 SC 26.6 23.4WTR 11.9 9.1TC 37.5 28.77.0 16.1 SC 27.3 23.9WTR 10.7 8.2These specifications are subject to change without notice.93

MHCCW Hot Water Performance DataMHCCW-04-00 HOT WATER CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.5 3.6 13.0 15.6 18.1 20.7 23.3 25.9 28.5 31.1 33.7 36.3 38.92.0 6.0 13.6 16.3 19.0 21.7 24.4 27.1 29.8 32.5 35.2 37.9 40.750 4002.5 9.0 13.9 16.7 19.5 22.3 25.0 27.8 30.6 33.4 36.2 39.0 41.73.0 12.6 14.2 17.0 19.9 22.7 25.5 28.4 31.2 34.0 36.9 39.7 42.5MHCCW-04-00 HOT WATER CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.5 3.6 10.4 13.0 15.6 18.1 20.7 23.3 25.9 28.5 31.1 33.7 36.32.0 6.0 10.8 13.6 16.3 19.0 21.7 24.4 27.1 29.8 32.5 35.2 37.960 4002.5 9.0 11.1 13.9 16.7 19.5 22.3 25.0 27.8 30.6 33.4 36.2 39.03.0 12.6 11.3 14.2 17.0 19.9 22.7 25.5 28.4 31.2 34.0 36.9 39.7MHCCW-04-00 HOT WATER CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.5 3.6 7.8 10.4 13.0 15.6 18.1 20.7 23.3 25.9 28.5 31.1 33.72.0 6.0 8.1 10.8 13.6 16.3 19.0 21.7 24.4 27.1 29.8 32.5 35.270 4002.5 9.0 8.3 11.1 13.9 16.7 19.5 22.3 25.0 27.8 30.6 33.4 36.23.0 12.6 8.5 11.3 14.2 17.0 19.9 22.7 25.5 28.4 31.2 34.0 36.9MHCCW-04-00 HOT WATER CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.5 3.6 5.2 7.8 10.4 13.0 15.6 18.1 20.7 23.3 25.9 28.5 31.12.0 6.0 5.4 8.1 10.8 13.6 16.3 19.0 21.7 24.4 27.1 29.8 32.580 4002.5 9.0 5.6 8.3 11.1 13.9 16.7 19.5 22.3 25.0 27.8 30.6 33.43.0 12.6 5.7 8.5 11.3 14.2 17.0 19.9 22.7 25.5 28.4 31.2 34.0These specifications are subject to change without notice.94



MHCCW Hot Water Performance DataMHCCW-10-00 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°4.0 4.9 32.1 38.5 44.9 51.3 57.7 64.2 70.6 77.0 83.4 89.8 96.25.0 7.4 33.5 40.2 46.9 53.6 60.3 67.0 73.7 80.3 87.1 93.8 100.550 10006.0 10.5 34.5 41.4 48.3 55.2 62.1 69.0 75.8 82.7 89.6 96.6 103.47.0 14.1 35.2 42.2 49.2 56.3 63.3 70.3 77.4 84.4 91.4 98.4 105.5MHCCW-10-00 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°4.0 4.9 25.7 32.1 38.5 44.9 51.3 57.7 64.2 70.6 77.0 83.4 89.85.0 7.4 26.8 33.5 40.2 46.9 53.6 60.3 67.0 73.7 80.3 87.1 93.860 10006.0 10.5 27.6 34.5 41.4 48.3 55.2 62.1 69.0 75.8 82.7 89.6 96.67.0 14.1 28.1 35.2 42.2 49.2 56.3 63.3 70.3 77.4 84.4 91.4 98.4MHCCW-10-00 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°4.0 4.9 19.3 25.7 32.1 38.5 44.9 51.3 57.7 64.2 70.6 77.0 83.45.0 7.4 20.1 26.8 33.5 40.2 46.9 53.6 60.3 67.0 73.7 80.3 87.170 10006.0 10.5 20.7 27.6 34.5 41.4 48.3 55.2 62.1 69.0 75.8 82.7 89.67.0 14.1 21.1 28.1 35.2 42.2 49.2 56.3 63.3 70.3 77.4 84.4 91.4MHCCW-10-00 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°4.0 4.9 12.9 19.3 25.7 32.1 38.5 44.9 51.3 57.7 64.2 70.6 77.05.0 7.4 13.4 20.1 26.8 33.5 40.2 46.9 53.6 60.3 67.0 73.7 80.380 10006.0 10.5 13.8 20.7 27.6 34.5 41.4 48.3 55.2 62.1 69.0 75.8 82.67.0 14.1 14.1 21.1 28.1 35.2 42.2 49.2 56.3 63.3 70.3 77.4 84.4These specifications are subject to change without notice.97


MHCCW Electric Heat Performance DataModelNumberNominalCFMElectricHeat BTUHMHCCW04-00 400 0MHCCW04-03 400 10,200MHCCW04-05 400 17,000MHCCW04-06 400 20,500MHCCW04-08 400 27,300MHCCW06-00 600 0MHCCW06-03 600 10,200MHCCW06-05 600 17,000MHCCW06-06 600 20,500MHCCW06-08 600 27,300MHCCW08-00 800 0MHCCW08-03 800 10,200MHCCW08-05 800 17,000MHCCW08-06 800 20,500MHCCW08-08 800 27,300MHCCW10-00 1000 0MHCCW10-03 1000 10,200MHCCW10-05 1000 17,000MHCCW10-06 1000 20,500MHCCW10-08 1000 27,300MHCCW12-00 1200 0MHCCW12-03 1200 10,200MHCCW12-05 1200 17,000MHCCW12-06 1200 20,500MHCCW12-08 1200 27,300These specifications are subject to change without notice.99

MHCCW CFM and Glycol AdjustmentsCFM vs. External Static Pressure TableModel NumberExternal Static Pressure0.00 0.05 0.10 0.15 0.20 0.25 0.30MHCCW04 485 455 415 370 325 0 0MHCCW06 775 745 715 680 640 595 545MHCCW08 915 890 850 815 775 730 685MHCCW10 1145 1110 1075 1035 995 955 905MHCCW12 1480 1445 1405 1365 1325 1280 1235Example:MHCCW04 @ 0.20 ESP produces 325 cfm.Locate 325 cfm (for the MHCCW04) on the Capacity Adjustment Factors on page 101. (TC =.79 & SC = .75)Multiply the stated chilled water capacity for the MHCCW04 on page 89 or the hot water capacity on page 94 by the adjustment factors to achievethe capacity adjustment.Propylene Glycol/ GPM Adjustment FactorsPropyleneGlycol %CapacityReductionGPM Adjustment =100% CapacityAmbientTemp26° F 10% x 0.99 x 1.0120° F 20% x 0.98 x 1.038° F 30% x 0.98 x 1.07-5° F 40% x 0.97 x 1.11-28° F 50% x 0.96 x 1.16Example:30% Propylene Glycol Solution.System capacity x 0.98GPM x 1.07These specifications are subject to change without notice100

MHCCW Capacity Adjustment FactorsCAPACITY CORRECTION FACTORSMODEL # MHCCW04 MHCCW06 MHCCW08 MHCCW10 MHCCW12CFM TC SC TC SC TC SC TC SC TC SC325 0.79 0.75350 0.82 0.78375 0.85 0.82400 0.88 0.86425 0.90 0.89450 0.94 0.93485 1.00 1.00525545 0.90 0.89600 0.92 0.91650 0.94 0.93685 0.95 0.94 0.80 0.77700 0.96 0.95 0.82 0.79750 0.98 0.97 0.84 0.81775 1.00 1.00 0.86 0.83800 0.88 0.85850 0.91 0.89915 1.00 1.00 0.86 0.84950 0.88 0.861000 0.90 0.881025 0.93 0.911050 0.96 0.951100 0.97 0.971125 0.99 0.991145 1.00 1.0012001235 0.89 0.881250 0.91 0.901300 0.92 0.911325 0.94 0.931350 0.95 0.941375 0.96 0.951400 0.97 0.971425 0.98 0.981450 0.99 0.991480 1.00 1.00These specifications are subject to change without notice101

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INSTALLATION & OPERATINGMANUALMHCCW Fan Coils 1- 3 Tons-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal configuration only and into anenclosure assembly. The enclosure assemblycan be ordered separately or field fabricatedby the installing contractor. See figure 2 forenclosure part numbers, dimensions andweights. See document number 030710001for enclosure assembly and installationinstructions. See figure 3 for fan coil onlydimensions.The coil hand of connection is fieldreversible. See figures 4-6 for converting thecoil hand of connection.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (LBS)MHCCW04 66.0MHCCW06 68.2MHCCW08 72.6MHCCW10 74.8MHCCW12 83.6Figure 1ENCLOSURE FAN COIL ENCLOSURE DIMENSIONS (in)PART NUMBER SIZE Depth Length Height WeightMPE468 4 32.75 39.75 11.00 26MPE468 6 32.75 39.75 11.00 26MPE468 8 32.75 39.75 11.00 26MPE10 10 32.75 45.75 11.00 30MPE12 12 32.75 51.75 11.00 34Figure 2103

INSTALLATION & OPERATINGINSTRUCTIONSMHCCW Fan Coils 1- 3 TonsFAN COIL DIMENSIONSFan CoilModel NumberA B C D E FMHCCW04-XX 37.72 34.56 31.41 10.23 5.51 21.65MHCCW06-XX 37.72 34.56 31.41 10.23 5.51 21.65MHCCW08-XX 37.72 34.56 31.41 10.23 5.51 21.65MHCCW10-XX 43.70 40.55 37.40 10.23 5.51 21.65MHCCW12-XX 49.68 46.53 43.38 10.23 5.51 21.65.5”Air VentWater ReturnDEWater Supply1”Coil Drain.75” (MPT)CondensateDrain Connection(Both Ends)FBACMounting NotchesDrain PanFigure 3104

INSTALLATION & OPERATINGMANUALMHCCW Fan Coils 1- 3 Tons-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORCONVERTING COILHAND OF CONNECTION& ELECTRIC HEATERACCESS.Figure 41. Remove the eleven screws thatattach the top to the fan coilassembly and remove the top.This will allow you to access theelectric heaters.Figure 42. Remove the eight screws thathold the coil into the fan coilframe assembly. Four screws perside.Figure 53 Slide the coil out of the fancoil frame assembly toward thecoil supply and return lineconnections. Ensure that care istaken when removing andinserting the coil not to damagethe coil fins. Insert the coil intothe fan coil frame assembly fromthe other end and reverseprocedures 4 & 5 to reassemblethe fan coil.Figure 6Figure 5Figure 6105

INSTALLATION & OPERATINGMANUALMHCCW Fan Coils 1- 3 TonsINSTRUCTIONS FORINSTALLING FAN COILUNIT INTO ENCLOSUREASSEMBLY1. Remove the ten screws thatattach the electrical assembly tothe fan coil unit. Do not separatethe electrical assembly from theblower assembly. These twoassemblies will be removed in thenext step.Figure 7Figure 72. Remove the five screwsattaching the blower assembly tothe coil assembly. Separate theelectrical and blower assembliesfrom the coil assembly.Figure 83. Insert the coil assembly intothe enclosure assembly startingwith the discharge air opening ofthe coil first. Ensure that thedischarge of the coil is insertedinto the discharge of theenclosure completely. Failure tocompletely insert the coildischarge will result inrecirculation of the discharge air.Figure 9Figure 8Figure 9106

INSTALLATION & OPERATINGMANUALMHCCW Fan Coils 1- 3 Tons4. Align the fan coil mountingbolts up with the four mountingnotches provided in the coilassembly top. Secure the coilassembly to the enclosure withtwo mounting bolts per side.Ensure that the coil assembly islevel in both directions to allowproper drainage and operation.Figure 105. Reinstall the blower assemblyonto the coil assembly using thefive screws previously removedin step 2 figure 8.Figure 11Figure 106. Reinstall the electricalassembly onto the coil assemblyusing the ten screws previouslyremoved in step 1 figure 7.Figure 12ELECTRICAL, COIL,DRAIN AND RETURN /SUPPLY AIR LOCATIONSFigure 117. There are multiple entry pointson the factory supplied enclosureassembly for water lines,condensate lines, refrigerant linesand electrical connections. If anon-louvered service access panelis used or if an alternate return airlocation is required an optionalreturn air cutout is provided.Figure 13Figure 12107

INSTALLATION & OPERATINGMANUALMHCCW Fan Coils 1- 3 TonsELECTRICAL &CONDENSATE DRAIN8. There are four terminationpoints for the electrical wiring.There are two on each side of theelectrical box. See pages 113,114&115 for electrical drawings.Wiring must be installed accordingto prevailing codes and regulations.The fan coil unit has onecondensate drain connection oneither side of the drain pan foreither left or right hand drainconnection. The opposite drainconnection not being used must becapped off by the installingcontractor. The middle drainconnection is the safety condensatedrain connection. Ensure that allcondensate drain lines have at leastone quarter of an inch of fall perfoot for proper drainage.Figure 14WATER COILCONNECTIONS9. The fan coil unit comes with amanual air bleed and a manual coildrain fitting. They are located onthe same side as the supply andreturn water line connections. Thewater supply line is connected tothe coil connection furthest awayfrom the fans. The water return lineis connected to the coil connectionclosest to the fans. Ensure that boththe supply and return water linesare insulated to prevent them fromsweating.Figure 15Manual Air BleedEntry PointsTypical Both EndsManual Coil DrainFigure 13Electrical Terminations Figure 14 PointsFigure 14Optional ReturnAir CutoutLeft and Right Hand Drain ConnectionsFigure 15Safety Drain ConnectionWater Return ConnectionWater Supply Connection108

INSTALLATION & OPERATIONMANUALMHCCW Fan Coils 1-3 TonsRETURN AND SUPPLY AIR CONNECTIONS10. When mounting the service access panel, louvered or non-louvered, the installing contractormust provide a frame in order to connect the enclosure assembly to the service access panel. This isrequired to obtain an airtight seal for the return air. Ensure that the material used for the frameadheres to national codes and / or local codes and regulations. Care must be taken when installingthe service access panel to ensure the opening of the hinged service panel.Figure 16 & 1711. Filters are not supplied with the fan coil unit or the service access panel. The filter(s) must besupplied by the installing contractor. If a louvered service access panel is used the filter will mounton the under side of the hinged access panel. If the optional return air cutout is used it isrecommended that a return air filter grille be used that has the same surface area as therecommended filter sizes.Figure 18Fan Coil Mounting BoltsTypical All Four CornersFan Coil EnclosureSupply Duct FlangeOptional Return Air CutoutFrame EnclosureSupplied ByInstalling ContractorCeilingHinged Service Access PanelLouvered Panel Shown. AnOptional Non-louvered ServiceAccess Panel Is Available.Return AirFigure 16Panel Mounting Screw ( TYP)109

INSTALLATION & OPERATIONMANUALMHCCW Fan Coils 1-3 TonsSERVICE ACCESS PANEL DIMENSIONSLouvered & Non-LouveredPanel Model NumberFanCoilA B CSize (in) (in) (in)MAP468L(NL) 4 43.25 27.5 1.5MAP468L(NL) 6 43.25 27.5 1.5MAP468L(NL) 8 43.25 27.5 1.5MAP10L (NL) 10 49.25 27.5 1.5MAP12L (NL) 12 55.25 27.5 1.5ABC(typ) Figure 17FAN COILMODELRECOMMENDED FILTERSIZESNUMBER Width (in) Length (in)MHCCW04 18 36MHCCW06 18 36MHCCW08 18 36MHCCW10 18 36MHCCW12 2 qty 18 24Figure 18110

INSTALLATION & OPERATIONMANUALMHCCW Fan Coils 1-3 Tons12. The fan coil enclosure assembly has a supply air duct flange to allow the attachment of ductwork.Ensure when attaching ductwork to the flange that the screws are at least one and half inches away fromthe front of the enclosure. This is to allow proper insertion of the fan coil assembly into the enclosureassembly when duct work will be installed before the fan coil is installed.Figure 19SUPPLY AIR DUCT FLANGEEnclosure Model NumberFanCoilA BSize (in) (in)MAP468L(NL) 4 6 31.75MAP468L(NL) 6 6 31.75MAP468L(NL) 8 6 31.75MAP10L (NL) 10 6 37.75MAP12L (NL) 12 6 43.75ABFigure 19111

INSTALLATION & OPERATIONMANUALMHCCW Fan Coils 1-3 TonsMAITENANCE1. Air Filter(s):Filters are an essential part of thequality of air that is provided to theoccupants. Never operate HVACequipment without filters. Filtershelp remove dust and unwantedparticles from the air stream,helping to keep the space clean.They also keep this debris fromcollecting on the heat transfersurfaces of the unit thusmaintaining optimum equipmentefficiency and performance. Thesefilters will be located either in theunit or upstream from the unit inthe return air ductwork. Filters mustbe inspected, cleaned and/orchanged routinely. This routinemaintenance procedure will allowthe unit to continually operate asdesigned, reduce service expensesand extend equipment/componentlife.and/or replacements in the event theunit fails to operate or is beingserviced. If fuses are used, ensurethat the replacement fuses are of thesame size and type as the ones youare replacing. It is a good idea tokeep replacement fuses of theappropriate size and type on hand.3. Routine Check Up and Service:This product is designed toprovide many years of dependable,trouble free comfort when properlymaintained. Proper maintenancewill consist of routine filtercleanings/changes, bi-annual checkups that include but not limited tofilter inspections, electric heaterinspections /cleaning of the internalelectrical and heat transfercomponents by a qualified servicetechnician. Failure to provideperiodic check ups and cleaning canresult in excessive operating costand/or equipment failure.2. Fuses and/or Circuit Breakers:This unit must be connected tothe buildings electric service inaccordance with local/nationalelectrical codes and regulations.These electrical connections willinclude over current protection inthe form of fuses or circuitbreakers. Have your contractoridentify/label the circuits and thelocation of them so that you may bein a position to make inspections112

MHCCW Without Electric Heat Wiring Diagram208/230-1-50/60113

MHCCW With Electric Heat Wiring Diagram208/230/-1-50/60114

MHCCW Without Electric Heat Wiring Diagram120-1-50/60115

MHCCW CERTIFIED DRAWING116

MHNCCW Chilled/Hot WaterCeiling Concealed4-Pipe Heat / Cool Fan Coil 12,000 - 36,000 BTUH117

MHNCCW NOMENCLATURE BREAKDOWN4-Pipe Heat/Cool Ceiling Concealed Fan CoilMHNCCW- XX - XX4-Pipe Heat/CoolVoltage01= 208/230-1-50/6003= 120-1-50/60Nominal Tons04 = 1 Ton06 = 1.5 Ton08 = 2 Ton10 = 2.5 Ton12 = 3 TonAvailable Model NumbersMHNCCW-04-01MHNCCW-06-01MHNCCW-08-01MHNCCW-10-01MHNCCW-12-01MHNCCW-04-03MHNCCW-06-03MHNCCW-08-03MHNCCW-10-03MHNCCW-12-03118

HVAC Guide SpecificationsChilled and Hot Water Fan Coil4-PipeNominal Size:12,000 – 36,000 BTUHMultiaqua Model Number:MHNCCW04MHNCCW06MHNCCW08MHNCCW10MHNCCW12Part 1-General1.01 System DescriptionMultiaqua Chilled Water Fan Coils are manufactured with heavy gauge galvanized steel to resist corrosion.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested chilled and hot water fan coil.2. Shall be assembled with heavy gauge galvanized steel.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Shall be available in 115-1-50/60 and 208/230-1-50/60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.D. Blower Wheels:1. Blower wheels are forward curved and dynamically balanced.E. Water Coil:1. Manufactured with water coils containing 3/8” copper tubing mechanically bonded to aluminumfins.2. Contain both a manual water drain and manual air bleed port per coil.3. Coils shall be factory tested to 350 psig.4. Coils shall be capable of being field converted from right to left hand connection.F. Drain Pan:1. All drain pans shall be coated on both the interior and exterior with baked polyester powder toresist corrosion.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a left and right hand primary sloped drain connection as well as a sloped righthand secondary drain connection.119

Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. All components shall be wired to an internal terminal block to allow for a field installed thermostat and orfan speed control.C. Controls shall include the following components.1. 24vac transformer.2. Fan relays.3. Optional thermostats.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Primary electrical power supply shall enter the unit at a single location.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.D. Control and high voltage points shall be accessed through terminal block.Part 5- Accessories:5.01 EnclosuresA. Fan coils shall be capable of incorporating enclosures.1. Enclosures shall be internally insulated to insure quite operation and increase efficiency.2. Shall include knockouts for ease of piping/electrical in and out of the enclosures.3. Shall include an optional return air cutout in the enclosure.4. Shall include a supply air duct flange.5. Shall incorporate baked polyester powder service access panels with and without a filter louver.120

MHNCCW Product SpecificationsModel NumberHeight(in)Length(in)Depth(in)Physical DataWeight(lbs)CoolingRowsFPIHeatingRowsFPICopperDiameter(in)WaterInlet(in)WaterOutlet(in)MHNCCW04-01(03) 10 37.72 21.65 66.0 2-14 2-14 3/8 5/8 5/8 3/4MHNCCW06-01(03) 10 37.72 21.65 68.2 3-14 2-14 3/8 5/8 5/8 3/4MHNCCW08-01(03) 10 37.72 21.65 72.6 4-14 2-14 3/8 5/8 5/8 3/4MHNCCW10-01(03) 10 43.70 21.65 74.8 4-14 2-14 3/8 7/8 7/8 3/4MHNCCW12-01(03) 10 49.68 21.65 83.6 4-14 2-14 3/8 7/8 7/8 3/4Drain(in)Model NumberNominalCFMElectrical DataVolts/ Phase/HertzMotorHPFull LoadAmpacityFuse or HACRCircuit BreakerPer CircuitMinimumAmpsMaximumAmpsMHNCCW04-01 208/230-1-50/60 1/8 0.82 1.03 2400MHNCCW04-03120-1-60 1/30 0.55 .69 2MHNCCW06-01 208/230-1-50/60 1/8 1.18 1.48 3600MHNCCW06-03120-1-60 1/30 0.55 .69 2MHNCCW08-01 208/230-1-50/60 1/4 1.43 1.79 3800MHNCCW08-03120-1-60 1/30 0.55 .69 2MHNCCW10-01 208/230-1-50/60 1/4 1.63 2.04 41000MHNCCW10-03120-1-60 1/8 1.80 2.25 2MHNCCW12-01 208/230-1-50/60 1/4 1.81 2.26 51200MHNCCW12-03120-1-60 1/4 3.00 3.75 7These specifications are subject to change without notice.121

MHNCCW Chilled Water Performance DataMHNCCW04 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 11.8 9.01.5 4.4 SC 8.9 7.8WTR 15.7 12.0TC 13.4 10.22.0 7.2 SC 9.5 8.3400 42WTR 13.4 10.2TC 14.3 11.02.5 10.7 SC 9.8 8.6WTR 11.5 8.8TC 15.1 11.53.0 14.7 SC 10.1 8.8WTR 10.1 7.7MHNCCW04 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 10.5 8.31.5 4.4 SC 8.5 7.5WTR 14.4 11.0TC 12.3 9.42.0 7.2 SC 9.1 8.0400 45WTR 12.3 9.4TC 13.2 10.02.5 10.7 SC 9.4 8.2WTR 10.5 8.0TC 13.8 10.63.0 14.7 SC 9.6 8.4WTR 9.2 7.0These specifications are subject to change without notice.122

MHNCCW Chilled Water Performance DataMHNCCW06 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 18.5 14.13.0 3.8 SC 13.4 11.7WTR 12.3 9.4TC 20.4 15.64.0 6.5 SC 14.1 12.3600 42WTR 10.2 7.8TC 21.6 16.55.0 9.8 SC 14.5 12.6WTR 8.6 6.6TC 22.4 17.16.0 13.8 SC 14.8 12.9WTR 7.5 5.7MHNCCW06 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 17 13.03.0 3.8 SC 12.8 11.2WTR 11.3 8.6TC 18.7 14.34.0 6.5 SC 13.4 11.8600 45WTR 9.4 7.2TC 19.8 15.15.0 9.8 SC 13.8 12.1WTR 7.9 6.0TC 20.6 15.76.0 13.8 SC 14.1 12.3WTR 6.9 5.2These specifications are subject to change without notice.123

MHNCCW Chilled Water Performance DataMHNCCW08 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 22.7 17.33.0 4.4 SC 17.5 15.4WTR 15.1 11.5TC 25.9 19.74.0 7.2 SC 18.6 16.3800 42WTR 12.9 9.9TC 28 21.45 10.7 SC 19.5 17.0WTR 11.2 8.6TC 29.4 22.56.0 14.7 SC 20.0 17.4WTR 9.8 7.5MHNCCW08 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 20.7 15.83.0 4.4 SC 15.7 13.8WTR 13.8 10.5TC 23.2 17.74.0 7.2 SC 16.6 14.6800 45WTR 11.6 8.8TC 24.8 18.95 10.7 SC 17.2 15WTR 9.9 7.6TC 26 19.86.0 14.7 SC 17.6 15.4WTR 8.7 6.6These specifications are subject to change without notice.124

MHNCCW Chilled Water Performance DataMHNCCW10 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 28.8 22.04.0 4.9 SC 21.9 19.3WTR 14.4 11.0TC 31.8 24.35.0 7.4 SC 23 20.11000 42WTR 12.7 9.7TC 33.9 25.96 10.5 SC 23.8 20.8WTR 11.3 8.6TC 35.5 27.17.0 14.1 SC 24.4 21.3WTR 10.2 7.8MHNCCW10 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 26.4 20.24.0 4.9 SC 21.0 18.6WTR 13.2 10.1TC 29.2 22.35.0 7.4 SC 22.0 19.41000 45WTR 11.7 8.9TC 31.1 23.86 10.5 SC 22.8 19.9WTR 10.4 7.9TC 32.6 24.97.0 14.1 SC 23.3 20.4WTR 9.3 7.1These specifications are subject to change without notice.125

MHNCCW Chilled Water Performance DataMHNCCW12 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 32.3 24.74.0 5.6 SC 25.4 22.4WTR 16.2 12.4TC 36.1 27.65.0 8.5 SC 26.8 23.51200 42WTR 14.4 11TC 38.9 29.76 12.0 SC 27.8 24.3WTR 13 9.9TC 40.9 31.27.0 16.1 SC 28.6 24.9WTR 11.7 8.9MHNCCW12 COOLING CAPACITIESAll capacities are based on nominal CFMNOMINAL EWT GPM PRESSURE ENTERING AIR TEMPERATURE (°F)CFM (°F) DROP(ft) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 29.7 24.64.0 5.6 SC 24.4 20.6WTR 14.8 12.3TC 33.1 25.35.0 8.5 SC 25.7 22.61200 45WTR 13.3 10.1TC 35.7 27.26 12.0 SC 26.6 23.4WTR 11.9 9.1TC 37.5 28.77.0 16.1 SC 27.3 23.9WTR 10.7 8.2These specifications are subject to change without notice.126

MHNCCW Hot Water Performance DataENTERINGAIR (°F)NOMINALCFM50 400MHNCCW-04 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.0 1.0 11.2 13.8 16.4 19.0 21.6 24.2 26.8 29.4 32.0 34.6 37.22.0 3.4 13.4 16.0 18.6 21.2 23.8 26.4 29.0 31.6 34.2 36.8 39.43.0 7.0 14.8 17.4 20.0 22.6 25.2 27.8 30.4 33.0 35.6 38.2 40.8ENTERINGAIR (°F)NOMINALCFM60 400MHNCCW-04 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.0 1.0 8.4 11.0 13.6 16.2 18.8 21.4 24.0 26.7 29.4 32.1 34.82.0 3.4 10.6 13.3 16.0 18.7 21.4 24.1 26.8 29.5 32.2 34.9 37.63.0 7.0 12.0 14.7 17.4 20.1 22.8 25.5 28.2 30.9 33.6 36.3 39.0ENTERINGAIR (°F)NOMINALCFM70 400MHNCCW-04 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.0 1.0 5.8 8.4 11.0 13.6 15.5 18.1 20.0 22.6 24.5 27.1 29.72.0 3.4 7.9 10.6 13.4 16.1 18.9 21.6 24.4 27.1 29.9 32.6 35.33.0 7.0 8.8 11.6 14.4 17.3 20.2 23.0 26.1 28.9 32.0 34.9 37.8ENTERINGAIR (°F)NOMINALCFM80 400MHNCCW-04 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.0 1.0 8.4 5.8 8.4 11.0 12.9 15.5 17.4 20.0 21.9 24.5 27.12.0 3.4 10.5 8.0 10.8 13.5 16.3 19.0 21.8 24.5 27.3 30.0 32.73.0 7.0 12.1 9.0 11.8 14.7 17.6 20.4 23.5 26.3 29.4 32.3 35.2These specifications are subject to change without notice.127


MHNCCW Hot Water Performance DataENTERINGAIR (°F)NOMINALCFM50 800MHNCCW-08 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.0 0.5 16.8 20.5 24.1 27.7 31.4 35.0 39.0 42.4 46.5 49.7 53.33.0 1.1 19.2 22.8 26.4 30.0 34.7 37.2 43.2 48.0 51.6 55.2 58.84.0 1.9 20.5 24.2 27.9 31.6 36.7 39.0 45.7 50.1 54.7 57.5 61.2ENTERINGAIR (°F)NOMINALCFM60 800MHNCCW-08 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.0 0.5 13.5 17.2 20.9 24.6 28.2 32.0 35.8 39.4 43.3 46.8 50.53.0 1.1 15.8 19.5 23.2 26.9 31.5 .34.3 40.0 41.9 48.4 52.8 56.54.0 1.9 17.3 21.0 24.7 28.4 33.5 35.8 42.5 46.9 51.5 54.3 58.0ENTERINGAIR (°F)NOMINALCFM70 800MHNCCW-08 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.0 0.5 10.5 14.1 17.7 21.3 25.0 28.5 32.6 35.7 40.1 42.9 46.53.0 1.1 12.6 16.3 20.0 23.7 28.3 34.8 36.8 42.2 45.2 49.6 53.34.0 1.9 14.1 17.8 21.5 25.2 30.3 32.6 39.3 43.7 48.3 51.1 54.8ENTERINGAIR (°F)NOMINALCFM80 800MHNCCW-08 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.0 0.5 7.1 10.8 14.5 18.2 21.8 25.6 29.4 33.0 36.9 40.4 44.13.0 1.1 9.4 13.1 16.8 20.5 25.1 27.9 33.6 35.3 42.0 46.4 50.14.0 1.9 10.9 14.6 18.3 22.0 27.1 33.1 36.1 40.5 45.1 47.9 51.6These specifications are subject to change without notice.129



MHNCCW CFM and Glycol AdjustmentsNominal CFM vs. External Static Pressure TableModel NumberHi Speed0.05 0.1 0.15 0.2 0.25 0.3MHNCCW04-xx 397 373 340 320 0 0MHNCCW06-xx 634 608 578 544 506 463MHNCCW08-xx 757 723 700 659 621 582MHNCCW10-xx 943 914 880 846 812 769MHNCCW12-xx 1228 1194 1160 1126 1088 1050Example:MHNCCW08 @ 0.15 ESP produces 700 cfm.Locate 700 cfm (for the MHNCCW08) on the Capacity Adjustment Factors on page 133. (TC =.98 & SC = .98)Multiply the stated chilled water capacity for the MHCCW08 on page 124 or the hot water capacity on page 129 by the adjustment factors to achievethe capacity adjustment.Propylene Glycol & GPM AdjustmentFactorsPropyleneGlycol %CapacityReductionGPM Adjustment =100% CapacityAmbientTemp26° F 10% x 0.99 x 1.0120° F 20% x 0.98 x 1.038° F 30% x 0.98 x 1.07-5° F 40% x 0.97 x 1.11-28° F 50% x 0.96 x 1.16Example:30% Propylene Glycol Solution.System capacity x 0.98GPM x 1.07These specifications are subject to change without notice132

MHNCCW Capacity Adjustment FactorsCOOLING CAPACITY CORRECTION FACTORSMODEL # MHNCCW04 MHNCCW06 MHNCCW08 MHNCCW10 MHNCCW12CFM TC SC TC SC TC SC TC SC TC SC320 0.88 0.86350 0.90 0.89375 0.94 0.93397 1.00 1.00425463 0.89 0.88500 0.91 0.90525 0.93 0.92550 0.95 0.94582 0.97 0.96 0.89 0.87600 0.98 0.97 0.91 0.89634 1.00 1.00 0.93 0.91 0.81 0.77675 0.95 0.94 0.84 0.81700 0.98 0.98 0.87 0.85757 1.00 1.00 0.90 0.88775 0.93 0.91800 0.96 0.95850 0.97 0.97900 0.99 0.99943 1.00 1.00100010251050 0.99 0.971100 1.06 1.051125 1.04 1.031150 1.03 1.021200 1.02 1.011228 1.00 1.00These specifications are subject to change without notice133

134

INSTALLATION & OPERATINGMANUALMHNCCW Fan Coils 1- 3 Tons-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal configuration only and into anenclosure assembly. The enclosure assemblycan be ordered separately or field fabricatedby the installing contractor. See figure 2 forenclosure part numbers, dimensions andweights. See document number 030710001for enclosure assembly and installationinstructions. See figure 3 for fan coil onlydimensions.The coil hand of connection is fieldreversible. See figures 4-6 for converting thecoil hand of connection.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (LBS)MHNCCW04 66.0MHNCCW06 68.2MHNCCW08 72.6MHNCCW10 74.8MHNCCW12 83.6Figure 1ENCLOSURE DIMENSIONSENCLOSURE FAN COIL(us)PART NUMBER SIZE Depth Length Height WeightMPE468 4 32.75 39.75 11.00 26MPE468 6 32.75 39.75 11.00 26MPE468 8 32.75 39.75 11.00 26MPE10 10 32.75 45.75 11.00 30MPE12 12 32.75 51.75 11.00 34Figure 2135

INSTALLATION & OPERATINGINSTRUCTIONSMHNCCW Fan Coils 1- 3 TonsFAN COIL DIMENSIONSFan CoilModel NumberA B C D E FMHNCCW04 37.72 34.56 31.41 10.00 5.51 21.65MHNCCW06 37.72 34.56 31.41 10.00 5.51 21.65MHNCCW08 37.72 34.56 31.41 10.00 5.51 21.65MHNCCW10 43.70 40.55 37.40 10.00 5.51 21.65MHNCCW12 49.68 46.53 43.38 10.00 5.51 21.65.5”Air VentsHot Water SupplyEHot Water ReturnDChilled WaterSupplyChilled WaterReturnB1”Coil DrainsF.75” (MPT)CondensateDrain Connection(Both Ends)CMounting NotchesADrain PanFigure 3136

INSTALLATION & OPERATINGMANUALMHNCCW Fan Coils 1- 3 Tons-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORCONVERTING COILHAND OF CONNECTIONFigure 41. Remove the eleven screws thatattach the top to the fan coilassembly and remove the top.Figure 42. Remove the eight screws thathold the coil into the fan coilframe assembly. Four screws perside.Figure 53 Slide the coil out of the fancoil frame assembly toward thecoil supply and return lineconnections. Ensure that care istaken when removing andinserting the coil not to damagethe coil fins. Insert the coil intothe fan coil frame assembly fromthe other end and reverseprocedures 4 & 5 to reassemblethe fan coil.Figure 6Figure 5Figure 6137

INSTALLATION & OPERATINGMANUALMHNCCW Fan Coils 1- 3 TonsINSTRUCTIONS FORINSTALLING FAN COILUNIT INTO ENCLOSUREASSEMBLY1. Remove the ten screws thatattach the electrical assembly tothe fan coil unit. Do not separatethe electrical assembly from theblower assembly. These twoassemblies will be removed in thenext step.Figure 7Figure 72. Remove the five screwsattaching the blower assembly tothe coil assembly. Separate theelectrical and blower assembliesfrom the coil assembly.Figure 83. Insert the coil assembly intothe enclosure assembly startingwith the discharge air opening ofthe coil first. Ensure that thedischarge of the coil is insertedinto the discharge of theenclosure completely. Failure tocompletely insert the coildischarge will result inrecirculation of the discharge air.Figure 9Figure 8Figure 9138

INSTALLATION & OPERATINGMANUALMHNCCW Fan Coils 1- 3 Tons4. Align the fan coil mountingbolts up with the four mountingnotches provided in the coilassembly top. Secure the coilassembly to the enclosure withtwo mounting bolts per side.Ensure that the coil assembly islevel in both directions to allowproper drainage and operation.Figure 105. Reinstall the blower assemblyonto the coil assembly using thefive screws previously removedin step 2 figure 8.Figure 11Figure 106. Reinstall the electricalassembly onto the coil assemblyusing the ten screws previouslyremoved in step 1 figure 7.Figure 12ELECTRICAL, COIL,DRAIN AND RETURN /SUPPLY AIR LOCATIONSFigure 117. There are multiple entry pointson the factory supplied enclosureassembly for water lines,condensate lines, refrigerant linesand electrical connections. If anon-louvered service access panelis used or if an alternate return airlocation is required an optionalreturn air cutout is provided.Figure 13Figure 12139

INSTALLATION & OPERATINGMANUALMHNCCW Fan Coils 1- 3 TonsELECTRICAL &CONDENSATE DRAIN8. There are four terminationpoints for the electrical wiring.There are two on each side of theelectrical box. See pages 144 & 145for electrical drawings. Wiringmust be installed according toprevailing codes and regulations.The fan coil unit has onecondensate drain connection oneither side of the drain pan foreither left or right hand drainconnection. The opposite drainconnection not being used must becapped off by the installingcontractor. The middle drainconnection is the safety condensatedrain connection. Ensure that allcondensate drain lines have at leastone quarter of an inch of fall perfoot for proper drainage.Figure 14WATER COILCONNECTIONS9. The fan coil unit comes with amanual air bleed and a manual coildrain fitting. They are located onthe same side as the supply andreturn water line connections. Thewater supply line is connected tothe coil connection furthest awayfrom the fans. The water return lineis connected to the coil connectionclosest to the fans. Ensure that boththe supply and return water linesare insulated to prevent them fromsweating.Figure 15Manual Air BleedEntry PointsTypical Both EndsManual Coil DrainFigure 13Electrical Terminations Figure 14 PointsFigure 14Optional ReturnAir CutoutLeft and Right Hand Drain ConnectionsFigure 15Safety Drain ConnectionWater Return ConnectionWater Supply Connection140

INSTALLATION & OPERATIONMANUALMHNCCW Fan Coils 1-3 TonsRETURN AND SUPPLY AIR CONNECTIONS10. When mounting the service access panel, louvered or non-louvered, the installing contractormust provide a frame in order to connect the enclosure assembly to the service access panel. This isrequired to obtain an airtight seal for the return air. Ensure that the material used for the frameadheres to national codes and / or local codes and regulations. Care must be taken when installingthe service access panel to ensure the opening of the hinged service panel.Figure 16 & 1711. Filters are not supplied with the fan coil unit or the service access panel. The filter(s) must besupplied by the installing contractor. If a louvered service access panel is used the filter will mounton the under side of the hinged access panel. If the optional return air cutout is used, it isrecommended that a return air filter grille be used that has the same surface area as therecommended filter sizes.Figure 18Fan Coil Mounting BoltsTypical All Four CornersFan Coil EnclosureSupply Duct FlangeOptional Return Air CutoutFrame EnclosureSupplied ByInstalling ContractorCeilingHinged Service Access PanelLouvered Panel ShownReturn AirFigure 16Panel Mounting Screw ( TYP)141

INSTALLATION & OPERATIONMANUALMHNCCW Fan Coils 1-3 TonsSERVICE ACCESS PANEL DIMENSIONSLouvered & Non-LouveredFanPanel ModelA B CCoilNumberSize (in) (in) (in)MAP468L(NL) 4 43.25 27.5 1.5MAP468L(NL) 6 43.25 27.5 1.5MAP468L(NL) 8 43.25 27.5 1.5MAP10L (NL) 10 49.25 27.5 1.5MAP12L (NL) 12 55.25 27.5 1.5ABC(typ) Figure 17FAN COILMODELRECOMMENDED FILTERSIZESNUMBER Width (in) Length (in)MHNCCW04 18 36MHNCCW06 18 36MHNCCW08 18 36MHNCCW10 18 36MHNCCW12 2 qty 18 24Figure 18142

INSTALLATION & OPERATIONMANUALMHNCCW Fan Coils 1-3 Tons12. The fan coil enclosure assembly has a supply air duct flange to allow the attachment of ductwork.Ensure when attaching ductwork to the flange that the screws are at least one and half inches away fromthe front of the enclosure. This is to allow proper insertion of the fan coil assembly into the enclosureassembly when duct work will be installed before the fan coil is installed.Figure 19SUPPLY AIR DUCT FLANGEFanEnclosureA BCoilModel NumberSize (in) (in)MAP468L(NL) 4 6 31.75MAP468L(NL) 6 6 31.75MAP468L(NL) 8 6 31.75MAP10L (NL) 10 6 37.75MAP12L (NL) 12 6 43.75ABFigure 19143

INSTALLATION & OPERATIONMANUALMHNCCW Fan Coils 1-3 TonsMAITENANCE1. Air Filter(s):Filters are an essential part of thequality of air that is provided to theoccupants. Never operate HVACequipment without filters. Filtershelp remove dust and unwantedparticles from the air stream,helping to keep the space clean.They also keep this debris fromcollecting on the heat transfersurfaces of the unit thusmaintaining optimum equipmentefficiency and performance. Thesefilters will be located either in theunit or upstream from the unit inthe return air ductwork. Filters mustbe inspected, cleaned and/orchanged routinely. This routinemaintenance procedure will allowthe unit to continually operate asdesigned, reduce service expensesand extend equipment/componentlife.and/or replacements in the event theunit fails to operate or is beingserviced. If fuses are used, ensurethat the replacement fuses are of thesame size and type as the ones youare replacing. It is a good idea tokeep replacement fuses of theappropriate size and type on hand.3. Routine Check Up and Service:This product is designed toprovide many years of dependable,trouble free comfort when properlymaintained. Proper maintenancewill consist of routine filtercleanings/changes, bi-annual checkups that include but not limited tofilter inspections, inspections/cleaning of the internal electricaland heat transfer components by aqualified service technician. Failureto provide periodic check ups andcleaning can result in excessiveoperating cost and/or equipmentfailure.2. Fuses and/or Circuit Breakers:This unit must be connected tothe buildings electric service inaccordance with local/nationalelectrical codes and regulations.These electrical connections willinclude over current protection inthe form of fuses or circuitbreakers. Have your contractoridentify/label the circuits and thelocation of them so that you may bein a position to make inspections144

MHNCCW-xx-01 Wiring Diagram208/230-1-50/60145

MHNCCW-xx-03 Wiring Diagram120-1-60146

146

MHNCCW CERTIFIED DRAWING147

MCCW Chilled/Hot WaterCeiling Concealed2-Pipe Heat / Cool Fan Coil 48,000 - 60,000 BTUH148

MCCW NOMENCLATURE BREAKDOWN2-Pipe Heat/Cool Ceiling Concealed Fan CoilMCCW- XX - H -12-Pipe Heat/CoolHeat/CoolVoltage1= 208/230/-1-50/60Nominal CFM16=160020=2000Available Model NumbersMCCW-16-H-1MCCW-20-H-1149

HVAC Guide SpecificationsChilled and Hot Water Fan Coil2-PipeNominal Size:48,000 – 60,000 BTUHMultiaqua Model Number:MCCW16MCCW20Part 1-General1.01 System DescriptionMultiaqua Chilled Water Fan Coils are manufactured with heavy gauge galvanized steel to resist corrosion.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested chilled and hot water fan coil.2. Shall be assembled with heavy gauge galvanized steel.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Shall be available in 208/230-1-50/60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.D. Blower Wheels:1. Blower wheels are forward curved and dynamically balanced.E. Water Coil:1. Manufactured with water coils containing 3/8” copper tubing mechanically bonded to aluminumfins.2. Contain both a manual water drain and manual air bleed port per coil.3. Coils shall be factory tested to 350 psig.4. Coils shall be capable of being field converted from right to left hand connection.F. Drain Pan:1. All drain pans shall be coated on both the interior and exterior with baked polyester powder toresist corrosion.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a left and right hand primary sloped drain connection as well as a sloped righthand secondary drain connection.150

Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. All components shall be wired to an internal terminal block to allow for a field installed thermostat and orfan speed control.C. Controls shall include the following components.1. 24vac transformer.2. Fan relays.3. Optional thermostats.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Primary electrical power supply shall enter the unit at a single location.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.D. Control and high voltage points shall be accessed through terminal block.151

MCCW Product SpecificationsPhysical DataModel NumberHeight(in)Length(in)Depth(in)Weight(lbs)CoolingRowsFPICopperDiameter(in)WaterInlet(in)WaterOutlet(in)Drain(in)MCCW-16-H-1 13.78 48.50 20.00 68.34 3-14 3/8 3/4 3/4 1/2MCCW-20-H-1 13.78 56.10 20.00 72.80 3-14 3/8 1.0 1.0 1/2Electrical DataModel NumberNominalCFMVolts/ Phase/HertzMotorHPFull LoadAmpacityFuse or HACRCircuit BreakerPer CircuitMinimumAmpsMaximumAmpsMCCW-16-H-1 1600 208/230-1-50/60 1/2 2.72 3.40 8MCCW-20-H-1 2000 208/230-1-50/60 1/2 2.72 3.40 8These specifications are subject to change without notice.152

MCCW Chilled Water Performance DataNOMINALCFM1600 42MCCW-16 COOLING CAPACITIESEWT ENTERING AIR TEMPERATURE (°F)(°F)GPM 80° D.B. / 67°W.B.7.08.09.010.075° D.B. / 63°W.B.TC 41.4 31.7SC 31.0 27.3WPD 4.7 4.7TC 43.4 33.1SC 31.7 27.8WPD 6.0 6.0TC 45.0 34.4SC 32.3 28.3WPD 7.4 7.4TC 46.4 35.4SC 32.8 28.7WPD 9.0 9.0NOMINALCFM1600 45MCCW-16 COOLING CAPACITIESEWT ENTERING AIR TEMPERATURE (°F)(°F)GPM 80° D.B. / 67°W.B.7.08.09.010.075° D.B. / 63°W.B.TC 38.0 29.0SC 29.7 26.3WPD 4.7 4.7TC 39.8 30.4SC 30.4 26.8WPD 6.0 6.0TC 41.3 31.5SC 30.9 27.2WPD 7.4 7.4TC 42.5 32.5SC 31.4 27.6WPD 9.0 9.0These specifications are subject to change without notice.153

MCCW Chilled Water Performance DataNOMINALCFM2000 42MCCW-20 COOLING CAPACITIESEWT ENTERING AIR TEMPERATURE (°F)(°F)GPM 80° D.B. / 67°W.B.9.010.011.012.075° D.B. / 63°W.B.TC 52.7 40.3SC 37.8 33.0WPD 9.4 9.4TC 54.3 41.5SC 38.4 33.5WPD 11.4 11.4TC 55.7 42.5SC 38.9 33.9WPD 13.5 13.5TC 56.8 43.4SC 39.4 34.2WPD 15.9 15.9NOMINALCFM2000 45MCCW-20 COOLING CAPACITIESEWT ENTERING AIR TEMPERATURE (°F)(°F)GPM 80° D.B. / 67°W.B.9.010.011.012.075° D.B. / 63°W.B.TC 48.4 37.0SC 36.1 31.7WPD 9.4 9.4TC 49.9 38.1SC 36.7 32.1WPD 11.4 11.4TC 51.1 39.0SC 37.2 32.5WPD 13.5 13.5TC 52.1 39.8SC 37.6 32.8WPD 15.9 15.9These specifications are subject to change without notice.154

MCCW Hot Water Performance DataMCCW-16 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°7.0 4.7 50.9 61.0 71.2 81.4 91.5 101.7 111.9 122.1 132.2 142.4 152.68.0 6.0 51.8 62.2 72.5 82.9 93.2 103.6 114.0 124.3 134.7 145.0 155.450 16009.0 7.4 52.6 63.1 73.6 84.1 94.6 105.2 115.7 126.2 136.7 147.2 157.710.0 9.0 53.2 63.9 74.5 85.2 95.8 106.4 117.1 127.7 138.4 149.0 159.7MCCW-16 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°7.0 4.7 40.7 50.9 61.0 71.2 81.4 91.5 101.7 111.9 122.1 132.2 142.48.0 6.0 41.4 51.8 62.2 72.5 82.9 93.2 103.6 114.0 124.3 134.7 145.060 16009.0 7.4 42.1 52.6 63.1 73.6 84.1 94.6 105.2 115.7 126.2 136.7 147.210.0 9.0 42.6 53.2 63.9 74.5 85.2 95.8 106.4 117.1 127.7 138.4 149.0MCCW-16 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°7.0 4.7 30.5 40.7 50.9 61.0 71.2 81.4 91.5 101.7 111.9 122.1 132.28.0 6.0 31.1 41.4 51.8 62.2 72.5 82.9 93.2 103.6 114.0 124.3 134.770 16009.0 7.4 31.5 42.1 52.6 63.1 73.6 84.1 94.6 105.2 115.7 126.2 136.710.0 9.0 31.9 42.6 53.2 63.9 74.5 85.2 95.8 106.4 117.1 127.7 138.4MCCW-16 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°7.0 4.7 20.3 30.5 40.7 50.9 61.0 71.2 81.4 91.5 101.7 111.9 122.18.0 6.0 20.7 31.1 41.4 51.8 62.2 72.5 82.9 93.2 103.6 114.0 124.380 16009.0 7.4 21.0 31.5 42.1 52.6 63.1 73.6 84.1 94.6 105.2 115.7 126.210.0 9.0 21.3 31.9 42.6 53.2 63.9 74.5 85.2 95.8 106.4 117.1 127.7These specifications are subject to change without notice.155

MCCW Hot Water Performance DataMCCW-20 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°9.0 9.4 58.9 70.7 82.5 94.3 106.0 117.9 129.6 141.4 153.2 165.0 176.810.0 11.4 59.6 71.6 83.5 95.4 107.4 119.3 131.2 143.1 155.1 167.0 178.950 200011.0 13.5 60.2 72.3 84.3 96.4 108.4 120.5 132.5 144.6 156.6 168.7 180.712.0 15.9 60.7 72.9 85.0 97.1 109.3 121.4 133.6 145.7 157.8 170.0 182.1MCCW-20 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°9.0 9.4 47.1 58.9 70.7 82.5 94.3 106.1 117.9 129.6 141.4 153.2 165.010.0 11.4 47.7 59.6 71.6 83.5 95.4 107.4 119.3 131.2 143.1 155.1 167.060 200011.0 13.5 48.2 60.2 72.3 84.3 96.4 108.4 120.5 132.5 144.6 156.6 168.712.0 15.9 48.6 60.7 72.9 85.0 97.1 109.3 121.4 133.6 145.7 157.8 170.0MCCW-20 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°9.0 9.4 35.4 47.1 58.9 70.7 82.5 94.3 106.1 117.9 129.6 141.4 153.210.0 11.4 35.8 47.7 59.6 71.6 83.5 95.4 107.4 119.3 131.2 143.1 155.170 200011.0 13.5 36.1 48.2 60.2 72.3 84.3 96.4 108.4 120.5 132.5 144.6 156.612.0 15.9 36.4 48.6 60.7 72.9 85.0 97.1 109.3 121.4 133.6 145.7 157.8MCCW-20 HEATING CAPACITIESENTERING NOMINAL ENTERING WATER TEMPERATURE (°F)GPM WPDAIR (°F) CFM100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°9.0 9.4 23.6 35.4 47.1 58.9 70.7 82.5 94.3 106.1 117.9 129.6 141.410.0 11.4 23.9 35.8 47.7 59.6 71.6 83.5 95.4 107.4 119.3 131.2 143.180 200011.0 13.5 24.1 36.1 48.2 60.2 72.3 84.3 96.4 108.4 120.5 132.5 144.612.0 15.9 24.3 36.4 48.6 60.7 72.9 85.0 97.1 109.3 121.4 133.6 145.7\These specifications are subject to change without notice.156

MCCW CFM and Glycol AdjustmentsNominal CFM vs. External Static Pressure TableModelHi SpeedNumber 0.05 0.10 0.15 0.20 0.25 0.30MCCW-16 1435 1420 1390 1355 1316 1281MCCW-20 1435 1415 1400 1363 1325 1290Example:MCCW-16 @ 0.30 ESP produces 1281 cfm.Locate 1281 cfm (for the MCCW-16) on the Capacity Adjustment Factors on page 157. (TC =.91 & SC = .89)Multiply the stated chilled water capacity for the MCCW-16 on page 153 or the hot water capacity on page 155 by the adjustment factors to achievethe capacity adjustment.Example:30% Propylene Glycol Solution.System capacity x 0.98GPM x 1.07Propylene Glycol & GPM Adjustment FactorsPropyleneGlycol %CapacityReductionGPM Adjustment =100% CapacityAmbientTemp26° F 10% x 0.99 x 1.0120° F 20% x 0.98 x 1.038° F 30% x 0.98 x 1.07-5° F 40% x 0.97 x 1.11-28° F 50% x 0.96 x 1.16CAPACITY CORRECTION FACTORSMODEL # MCCW-16 MCCW-20CFM TC SC TC SC1281 0.91 0.891290 0.91 0.89 0.92 0.921300 0.92 0.92 0.92 0.921325 0.94 0.93 0.94 0.931350 0.96 0.95 0.96 0.951375 0.97 0.96 0.97 0.961400 0.99 0.99 0.99 0.991435 1 1 1 1These specifications are subject to change without notice157

158

INSTALLATION & OPERATINGMANUALMCCW Fan Coils 4 & 5 Tons-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.horizontal configuration only. See figure 2for fan coil only dimensions.The coil hand of connection is fieldreversible. See figures 3-5 for converting thecoil hand of connection.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (LBS)MCCW-16 68.34MCCW-20 72.80Figure 1This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in a159

INSTALLATION & OPERATINGINSTRUCTIONSMCCW Fan Coils 4 & 5 TonsFAN COIL DIMENSIONSFan Coil ModelNumber A B C D E FMCCW16 56.38 51.85 50.20 13.74 9.49 19.80MCCW20 56.38 51.85 50.20 13.74 9.49 19.80.5”Air VentWater ReturnDEWater Supply1”Coil Drain.75” (MPT)CondensateDrain Connection(Both Ends)BFACMounting NotchesDrain PanFigure 2160

INSTALLATION & OPERATINGMANUALMCCW Fan Coils 4 & 5 Tons-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORCONVERTING COILHAND OF CONNECTIONFigure 31. Remove the eleven screws thatattach the top to the fan coilassembly and remove the top.Figure 32. Remove the eight screws thathold the coil into the fan coilframe assembly. Four screws perside.Figure 43 Slide the coil out of the fancoil frame assembly toward thecoil supply and return lineconnections. Ensure that care istaken when removing andinserting the coil not to damagethe coil fins. Insert the coil intothe fan coil frame assembly fromthe other end and reverseprocedures 3 & 4 to reassemblethe fan coil.Figure 5Figure 4Figure 5161

INSTALLATION & OPERATINGMANUALMHNCCW Fan Coils 1- 3 TonsINSTRUCTIONS FORINSTALLING FAN COILUNIT INTO ENCLOSUREASSEMBLY1. Remove the ten screws thatattach the electrical assembly tothe fan coil unit. Do not separatethe electrical assembly from theblower assembly. These twoassemblies will be removed in thenext step.Figure 6Figure 62. Remove the five screwsattaching the blower assembly tothe coil assembly. Separate theelectrical and blower assembliesfrom the coil assembly.Figure 73. Insert the coil assembly intothe enclosure assembly startingwith the discharge air opening ofthe coil first. Ensure that thedischarge of the coil is insertedinto the discharge of theenclosure completely. Failure tocompletely insert the coildischarge will result inrecirculation of the discharge air.Figure 8Figure 7Figure 8162

INSTALLATION & OPERATINGMANUALMCCW Fan Coils 4 & 5 Tons4. Align the fan coil mountingbolts up with the four mountingnotches provided in the coilassembly top. Secure the coilassembly to the enclosure withtwo mounting bolts per side.Ensure that the coil assembly islevel in both directions to allowproper drainage and operation.Figure 95. Reinstall the blower assemblyonto the coil assembly using thefive screws previously removedin step 2 figure 7.Figure 10Figure 96. Reinstall the electricalassembly onto the coil assemblyusing the ten screws previouslyremoved in step 1 figure 6.Figure 11ELECTRICAL, COIL,DRAIN AND RETURN /SUPPLY AIR LOCATIONSFigure 107. There are multiple entry pointson the factory supplied enclosureassembly for water lines,condensate lines, refrigerant linesand electrical connections. If anon-louvered service access panelis used or if an alternate return airlocation is required an optionalreturn air cutout is provided.Figure 12Figure 11163

INSTALLATION & OPERATINGMANUALMCCW Fan Coils 4 & 5 TonsELECTRICAL &CONDENSATE DRAIN8. There are four terminationpoints for the electrical wiring.There are two on each side of theelectrical box. See page 169 forelectrical drawings. Wiring must beinstalled according to prevailingcodes and regulations.The fan coil unit has onecondensate drain connection oneither side of the drain pan foreither left or right hand drainconnection. The opposite drainconnection not being used must becapped off by the installingcontractor. The middle drainconnection is the safety condensatedrain connection. Ensure that allcondensate drain lines have at leastone quarter of an inch of fall perfoot for proper drainage.Figure 13WATER COILCONNECTIONS9. The fan coil unit comes with amanual air bleed and a manual coildrain fitting. They are located onthe same side as the supply andreturn water line connections. Thewater supply line is connected tothe coil connection furthest awayfrom the fans. The water return lineis connected to the coil connectionclosest to the fans. Ensure that boththe supply and return water linesare insulated to prevent them fromsweating.Figure 14Manual Air BleedEntry PointsTypical Both EndsManual Coil DrainFigure 12Electrical Terminations Figure 14 PointsFigure 13Optional ReturnAir CutoutLeft and Right Hand Drain ConnectionsFigure 14Safety Drain ConnectionWater Return ConnectionWater Supply Connection164

INSTALLATION & OPERATIONMANUALMCCW Fan Coils 4 & 5 TonsRETURN AND SUPPLY AIR CONNECTIONS10. When mounting the service access panel, louvered or non-louvered, the installing contractormust provide a frame in order to connect the enclosure assembly to the service access panel. This isrequired to obtain an airtight seal for the return air. Ensure that the material used for the frameadheres to national codes and / or local codes and regulations. Care must be taken when installingthe service access panel to ensure the opening of the hinged service panel.Figure 15 & 1611. Filters are not supplied with the fan coil unit or the service access panel. The filter(s) must besupplied by the installing contractor. If a louvered service access panel is used the filter will mounton the under side of the hinged access panel. If the optional return air cutout is used it isrecommended that a return air filter grille be used that has the same surface area as therecommended filter sizes.Figure 17Fan Coil Mounting BoltsTypical All Four CornersFan Coil EnclosureSupply Duct FlangeOptional Return Air CutoutFrame EnclosureSupplied ByInstalling ContractorCeilingHinged Service Access PanelLouvered Panel ShownReturn AirFigure 15Panel Mounting Screw ( TYP)165

INSTALLATION & OPERATIONMANUALMCCW Fan Coils 4 & 5 TonsSERVICE ACCESS PANEL DIMENSIONSLouvered & Non-LouveredFanPanel ModelA B CCoilNumberSize (in) (in) (in)MAP468L(NL) 4 43.25 27.5 1.5MAP468L(NL) 6 43.25 27.5 1.5MAP468L(NL) 8 43.25 27.5 1.5MAP10L (NL) 10 49.25 27.5 1.5MAP12L (NL) 12 55.25 27.5 1.5ABC(typ) Figure 16FAN COILMODELRECOMMENDED FILTERSIZESNUMBER Width (in) Length (in)MHNCCW04 18 36MHNCCW06 18 36MHNCCW08 18 36MHNCCW10 18 36MHNCCW12 2 qty 18 24Figure 17166

INSTALLATION & OPERATIONMANUALMCCW Fan Coils 4 & 5 Tons12. The fan coil enclosure assembly has a supply air duct flange to allow the attachment of ductwork.Ensure when attaching ductwork to the flange that the screws are at least one and half inches away fromthe front of the enclosure. This is to allow proper insertion of the fan coil assembly into the enclosureassembly when duct work will be installed before the fan coil is installed.Figure 18SUPPLY AIR DUCT FLANGEFanEnclosureA BCoilModel NumberSize (in) (in)MAP468L(NL) 4 6 31.75MAP468L(NL) 6 6 31.75MAP468L(NL) 8 6 31.75MAP10L (NL) 10 6 37.75MAP12L (NL) 12 6 43.75ABFigure 18167

INSTALLATION & OPERATIONMANUALMCCW Fan Coils 4 & 5 TonsMAITENANCE1. Air Filter(s):Filters are an essential part of thequality of air that is provided to theoccupants. Never operate HVACequipment without filters. Filtershelp remove dust and unwantedparticles from the air stream,helping to keep the space clean.They also keep this debris fromcollecting on the heat transfersurfaces of the unit thusmaintaining optimum equipmentefficiency and performance. Thesefilters will be located either in theunit or upstream from the unit inthe return air ductwork. Filters mustbe inspected, cleaned and/orchanged routinely. This routinemaintenance procedure will allowthe unit to continually operate asdesigned, reduce service expensesand extend equipment/componentlife.and/or replacements in the event theunit fails to operate or is beingserviced. If fuses are used, ensurethat the replacement fuses are of thesame size and type as the ones youare replacing. It is a good idea tokeep replacement fuses of theappropriate size and type on hand.3. Routine Check Up and Service:This product is designed toprovide many years of dependable,trouble free comfort when properlymaintained. Proper maintenancewill consist of routine filtercleanings/ changes, bi-annual checkups that include but not limited tofilter inspections, inspections/cleaning of the internal electricaland heat transfer components by aqualified service technician. Failureto provide periodic check ups andcleaning can result in excessiveoperating cost and/or equipmentfailure.2. Fuses and/or Circuit Breakers:This unit must be connected tothe buildings electric service inaccordance with local/nationalelectrical codes and regulations.These electrical connections willinclude over current protection inthe form of fuses or circuitbreakers. Have your contractoridentify/label the circuits and thelocation of them so that you may bein a position to make inspections168

MCCW-xx-01 Wiring Diagram208/230-1-50/60169

MCCW CERTIFIED DRAWING170

MHWW Chilled/Hot WaterHi-Wall Fan Coil2-Pipe Heat / Cool Fan Coil 9,000 - 36,000 BTUH171

MHWW NOMENCLATURE BREAKDOWN2-Pipe Heat/Cool Hi-Wall Fan CoilMHWW- XX - H -12-Pipe Heat/CoolHeat/CoolVoltage1= 208/230/-1-50/60Nominal BTUH09 = 9,00012 = 12,00018 = 8,00024 = 24,00036 = 36,000Available Model NumbersMHWW-09-H-1MHWW-12-H-1MHWW-18-H-1MHWW-24-H-1MHWW-36-H-1172

HVAC Guide SpecificationsChilled and Hot Water Hi-Wall Fan Coil2-PipeNominal Size:9,000 – 36,000 BTUHMultiaqua Model Number:MHWW-09MHWW-12MHWW-18MHWW-24MHWW-36Part 1-General1.01 System DescriptionMultiaqua Chilled Water Fan Coils are manufactured with high impact molded polymers.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested chilled and hot water fan coil.2. Shall be assembled with high quality.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of high impact polymers.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Shall be available in 208/230-1-50/60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.4. Unit shall contain a swing motor to modulate the discharge air.D. Blower Wheels:1. Blower wheels are tangential and dynamically balanced.E. Water Coil:1. Manufactured with water coils containing 3/8” copper tubing mechanically bonded to aluminumfins.2. Coils shall be factory tested to 350 psig.F. Drain Pan:1. All drain pans shall be molded with high impact polymers.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a flexible drain tubing that is accessible from the back of the unit.173

G. Filters:1. Unit shall contain 65% washable filters.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. Controls shall include a circuit board, room sensor, indoor coil thermistor, transformer and wirelessremote.C. Controls shall be capable of incorporating an optional hard-wired thermostat.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.B. Discharge air sensor.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Unit shall incorporate a three prong male primary electrical power cord.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.174

MHWW Product SpecificationsModel NumberHeight(in)Length (in)Depth(in)Physical DataWeight(lbs)CoolingRowsFPICopperDiameter(in)WaterInlet(in)WaterOutlet(in)MHWW-09-H-1 11.70 34.65 6.70 25.70 2-18 3/8 1/2 1/2 1/2MHWW-12-H-1 12.00 39.00 7.10 27.50 2-18 3/8 1/2 1/2 1/2MHWW-18-H-1 14.17 46.14 8.10 44.40 2-18 3/8 1/2 1/2 3/4MHWW-24-H-1 14.17 46.14 8.10 46.20 3-18 3/8 1/2 1/2 3/4MHWW-36-H-1 14.25 56.50 8.37 50.50 3-18 3/8 3/4 3/4 3/4Drain(in)Electrical DataModel NumberHiSpeedCFMVolts/Phase/HertzMotorHPFull LoadAmpacityFuse or HACRCircuit Breaker PerCircuitMinimumAmpsMaximumAmpsMHWW-09-H-01 270 1/60 0.14MHWW-12-H-01 330 1/60 0.17208/230-1-50/60MHWW-18-H-01 480 1/20 0.24MHWW-24-H-01 600 1/20 0.35.18 1.18 1.30 1.44 1MHWW-36-H-01 8501/12 0.42.53 1These specifications are subject to change without notice.175

MHWW Chilled Water Performance DataMHWW-09 COOLING CAPACITIESCFMEWTENTERING AIR TEMPERATURE (°F)GPM(°F)80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 10.5 8.01.8 SC 7.9 7.0WPD 3.6 3.6TC 11.8 9.02.0 SC 8.4 7.4270 42WPD 6.0 6.0TC 12.7 9.72.5 SC 8.7 7.6WPD 9.0 9.0TC 13.3 10.23.0 SC 9.0 7.8WPD 12.6 12.6MHWW-09 COOLING CAPACITIESCFMEWTENTERING AIR TEMPERATURE (°F)GPM(°F)80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 9.6 7.31.8 SC 7.6 6.7WPD 3.6 3.6TC 10.8 8.32.0 SC 8.1 7.1270 45WPD 6.0 6.0TC 11.6 8.92.5 SC 8.3 7.3WPD 9.0 9.0TC 12.2 9.33.0 SC 8.6 7.5WPD 12.6 12.6These specifications are subject to change without notice.176

MHWW Chilled Water Performance DataMHWW-12 COOLING CAPACITIESCFMEWTENTERING AIR TEMPERATURE (°F)GPM(°F)80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 13.7 10.43.0 SC 9.2 8.0WPD 11.4 11.4TC 14.3 10.94.0 SC 9.4 8.2330 42WPD 15.9 15.9TC 14.8 11.35.0 SC 9.6 8.3WPD 17.6 17.6TC 15.1 11.56.0 SC 9.8 8.4WPD 21.2 21.2MHWW-12 COOLING CAPACITIESCFMEWTENTERING AIR TEMPERATURE (°F)GPM(°F)80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 12.5 9.63.0 SC 8.8 7.6WPD 11.4 11.4TC 13.1 10.04.0 SC 9 7.8330 45WPD 15.9 15.9TC 13.5 10.35.0 SC 9.1 7.9WPD 17.6 17.6TC 13.9 10.66.0 SC 9.3 8.0WPD 21.2 21.2These specifications are subject to change without notice.177


MHWW Chilled Water Performance DataMHWW-24 COOLING CAPACITIESCFMEWTENTERING AIR TEMPERATURE (°F)GPM(°F)80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 23.0 17.64.8 SC 16.0 14.0WPD 8.3 8.3TC 23.8 18.25.0 SC 16.3 14.2WPD 10.3 10.3600 42TC 24.5 18.76.0 SC 16.6 14.4WPD 12.6 12.6TC 25.0 19.17.0SC 16.8 14.6WPD 15.0 15.0MHWW-24 COOLING CAPACITIESCFMEWTENTERING AIR TEMPERATURE (°F)GPM(°F)80° D.B. / 67° W.B. 75° D.B. / 63° W.B.TC 21.1 16.14.8 SC 15.3 13.4WPD 8.3 8.3TC 21.8 16.75.0 SC 15.6 13.6600 45WPD 10.3 10.3TC 22.4 17.16.0 SC 15.8 13.8WPD 12.6 12.6TC 23.0 17.57.0 SC 16.0 13.9WPD 15.0 15.0These specifications are subject to change without notice.179


MHWW Hot Water Performance DataMHWW-09 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.5 3.6 13.0 15.6 18.1 20.7 23.3 25.9 28.5 31.1 33.7 36.3 38.92.0 6.0 13.6 16.3 19.0 21.7 24.4 27.1 29.8 32.5 35.2 37.9 40.750 2702.5 9.0 13.9 16.7 19.5 22.3 25.0 27.8 30.6 33.4 36.2 39.0 41.73.0 12.6 14.2 17.0 19.9 22.7 25.5 28.4 31.2 34.0 36.9 39.7 42.5MHWW-09 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.5 3.6 10.4 13.0 15.6 18.1 20.7 23.3 25.9 28.5 31.1 33.7 36.32.0 6.0 10.8 13.6 16.3 19.0 21.7 24.4 27.1 29.8 32.5 35.2 37.960 2702.5 9.0 11.1 13.9 16.7 19.5 22.3 25.0 27.8 30.6 33.4 36.2 39.03.0 12.6 11.3 14.2 17.0 19.9 22.7 25.5 28.4 31.2 34.0 36.9 39.7MHWW-09 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.5 3.6 7.8 10.4 13.0 15.6 18.1 20.7 23.3 25.9 28.5 31.1 33.72.0 6.0 8.1 10.8 13.6 16.3 19.0 21.7 24.4 27.1 29.8 32.5 35.270 2702.5 9.0 8.3 11.1 13.9 16.7 19.5 22.3 25.0 27.8 30.6 33.4 36.23.0 12.6 8.5 11.3 14.2 17.0 19.9 22.7 25.5 28.4 31.2 34.0 36.9MHWW-09 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.5 3.6 5.2 7.8 10.4 13.0 15.6 18.1 20.7 23.3 25.9 28.5 31.12.0 6.0 5.4. 8.1 10.8 13.6 16.3 19.0 21.7 24.4 27.1 29.8 32.580 2702.5 9.0 5.6 8.3 11.1 13.9 16.7 19.5 22.3 25.0 27.8 30.6 33.43.0 12.6 5.7 8.5 11.3 14.2 17.0 19.9 22.7 25.5 28.4 31.2 34.0These specifications are subject to change without notice.181

MHWW Hot Water Performance DataMHWW-12 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.5 11.4 14.4 17.3 20.2 23.0 25.9 28.8 31.7 34.6 37.5 40.3 43.23.0 15.9 14.7 17.6 20.5 23.5 26.4 29.3 32.3 35.2 36.9 41.1 44.050 3303.5 17.6 14.9 17.8 20.8 23.8 26.7 29.7 32.7 35.6 38.6 41.6 44.64.0 21.2 15.0 18.0 21.0 24.0 27.0 29.9 32.9 35.9 38.9 41.9 44.9MHWW-12 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.5 11.4 11.5 14.4 17.3 20.2 23.0 25.9 28.8 31.7 34.6 37.5 40.33.0 15.9 11.7 14.7 17.6 20.5 23.5 26.4 29.3 32.3 35.2 38.1 41.160 3303.5 17.6 11.9 14.9 17.8 20.8 23.8 26.7 29.7 32.7 35.6 38.6 41.64.0 21.2 12.0 15.0 18.0 21.0 24.0 27.0 29.9 32.9 35.9 38.9 41.9MHWW-12 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.5 11.4 8.6 11.5 14.4 17.3 20.2 23.0 25.9 28.8 31.7 34.6 37.53.0 15.9 8.8 11.7 14.7 17.6 20.5 23.5 26.4 29.3 32.3 35.2 38.170 3303.5 17.6 8.9 11.9 14.9 17.8 20.8 23.8 26.7 29.7 32.7 35.6 38.64.0 21.2 9.0 12.0 15.0 18.0 21.0 24.0 27.0 29.9 32.9 35.9 38.9MHWW-12 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.5 11.4 5.8 8.6 11.5 14.4 17.3 20.2 23.0 25.9 28.8 31.7 34.63.0 15.9 5.9 8.8 11.7 14.7 17.6 20.5 23.5 26.4 29.3 32.3 35.280 3303.5 17.6 5.9 8.9 11.9 14.9 17.8 20.8 23.8 26.7 29.7 32.7 35.64.0 21.2 6.0 9.0 12.0 15.0 18.0 21.0 24.0 27.0 29.9 32.9 35.9These specifications are subject to change without notice.182




MHWW Capacity and Glycol AdjustmentsCAPACITY CORRECTION FACTORSMODEL # MHWW-09 MHWW-12 MHWW-18 MHWW-24 MHWW-36CFM TC SC TC SC TC SC TC SC TC SC200 0.91 0.88225 0.93 0.90250 0.96 0.93 0.92 0.86275 0.94 0.89300 0.96 0.92325 0.98 0.95350375 0.90 0.86400 0.92 0.88425 0.94 0.90450 0.96 0.93 0.86 0.84500 0.88 0.85525 0.91 0.88550 0.94 0.91575 0.98 0.94600650675 0.82 0.80700 0.85 0.82725 0.88 0.85750 0.91 0.88775 0.93 0.90800 0.96 0.93825 0.98 0.95Example:30% Propylene Glycol Solution.System capacity x 0.98GPM x 1.07Propylene Glycol & GPM Adjustment FactorsPropyleneGlycol %CapacityReductionGPM Adjustment =100% CapacityAmbientTemp26° F 10% x 0.99 x 1.0120° F 20% x 0.98 x 1.038° F 30% x 0.98 x 1.07-5° F 40% x 0.97 x 1.11-28° F 50% x 0.96 x 1.16These specifications are subject to change without notice186

187

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000-36,000 BTUH-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found, a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation, ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal configuration only. See figure 2for fan coil and mounting plate dimensions.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (lbs)MHWW-09-H-1 25.70MHWW-12-H-1 27.50MHWW-18-H-1 44.40MHWW-24-H-1 46.20MHWW-36-H-1 50.50Figure 1188

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000-36,000 BTUHFan Coil ModelNumberFAN COIL AND MOUNTING PLATE DIMENSIONS (in)A B C D E F G H I JKFieldSuppliedHoleLFieldSuppliedHoleMHWW-09 34.6 11.7 7.5 7.5 3.5 2.7 1.6 0.8 1.8 0.8 2.8 2.8MHWW-12 39.0 12.0 7.5 7.5 3.6 2.7 1.5 1.1 1.7 1.0 2.8 2.8MHWW-18 46.0 14.2 3.8 3.8 6.1 2.4 2.4 1.7 2.4 1.8 2.8 2.8MHWW-24 46.0 14.2 3.8 3.8 6.1 2.4 2.4 1.7 2.4 1.8 2.8 2.8MHWW-36 57.1 14.4 4.0 4.0 6.1 2.8 1.5 1.7 1.5 1.8 2.8 2.8ACDBMounting PlateHGKEFLIJFigure 2189

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUH-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORINSTALLING THE MOUNTINGPLATEFigure 31. After a suitable place for installationhas been selected, place the mountingplate horizontally on the wall. Make surethe alignment is horizontal. Use a plumbline if available. Mark on the wall wherethe mounting holes will be drilled.Figure 32. Drill the holes for the type ofmounting hardware to be used. Checklocal building codes for correct mountinghardware. Secure the mounting plate andcheck for stiffness.Figure 43 Drill a diagonal piping access hole (2.75”) in diameter on both sides of themounting bracket. Refer to figure 2 forfield supplied hole locationsFigure 44. Check local and national codes forpiping access wall penetrations. Seefigure 5 if wall sleeves are required.Figure 5Figure 5190

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHINSTRUCTIONS FORINSTALLING FAN COILUNIT ONTO MOUNTINGPLATE1. Route the fan coil piping,electrical, valve control wiresand/or flexible drain hose througheither of the 2.75” previouslydrilled holes in step 3 figure 4.Ensure that the piping is insulatedper local and national codes.Improper insulation could resultin voided warranty and/orbuilding damage.Figure 6Figure 62. There is a piping channel in thebottom portion of the back of theunits for crossover piping, drain,valve control or electrical.Figure 7Figure 73. Figure 8 depicts (from theback of the unit) the 24 vac valvecontrol wires on the left and the220 vac power cord on the right.These can be routed to either theright or left hand side of the fancoil.Figure 8Figure 8191

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHINSTRUCTIONS FORINSTALLING FAN COIL UNITONTO MOUNTING PLATE4. Ensure that the drain tubing isinstalled with at least 1/4” per footof downward slope.5. Secure the fan coil to the mountingplate by first sliding the fan coil ontothe two notches provided on themounting plate.Figure 9 & 10Figure 96. Push the bottom of the fan coiltowards the wall in order to engage thelocking clips.Figure 117. Connect the liquid solution piping“flared fittings” and pressure test linesto make sure there are no leaks.8. Connect the condensate drain hose.Make certain that the drain has no trapsor dips in the line that would impededrainage.Figure 109. Carefully seal any wall penetrationsper local and national codes.Figure 11192

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHINSTRUCTIONS FORREMOVING THE FAN COILCOVER AND AIR PURGINGTHE LIQUID SOLUTIONCOIL.1. Fold up the filter cover and removethe three screw covers and screws thatare located below the discharge airgrille. Remove the one screw locatedbetween the two filter racks.Figure 12Figure 122. Grasp the bottom, sides of the coverand pull outward.Figure 133. After fan coil and piping hasbeen pressurized and the fan coil andpiping has no indication of leaks, fillthe system with liquid solution.4. Energize the control valve toallow the coil to fill up with liquidsolution.Figure 135. Open the purging valve by usinga standard screw driver and supportfitting with a wrench. Ensure that anywater that discharges from the purgingvalve does not come in contact withthe electrical components.Figure 146. When air purging is complete,close off the purging valve and checkfor leaks.Figure 14193

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWW CONTROLS OPERATION GUIDEWireless Control: Standard Control Package (Page 195)Optional Wired Control: EG-003 (Page 200)194

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWW CONTROLS OPERATION GUIDEWireless Control:Name and function of remote controllerNote:• Be sure there are no obstructions between receiver and remote controller.• The remote control signal can be received at the distance of up to about 21 feet.• Do not throw or drop the remote controller.• Do not put any liquid in the remote controller and do not put it in direct sunlightor any place where it is very hot.• Remove batteries when the remote controller is not in use for extended periods oftime.• The remote controller should be placed 3 or more feet away from any electricappliance.LED MODE INDICATOR FOR REMOTE CONTROLLER:INDICATORLIGHTSREMOTESETTING FUNCTIONRED-GREEN COOL COOLING OPERATION ONLYRED-OFF DRY HUMIDITY CONTROL, WATER FLOW, NO FANRED-RED HEAT HEATING OPERATION ONLYRED-OFF FAN FAN OPERATION ONLYRED-BLINKING AUTO AUTO SELECTION BETWEEN HEAT & COOLDEPENDENT ON ROOM TEMP & SET TEMPRED-ORANGE ALERT FAN COIL WAITING FOR EWT TO REACH PROPERTEMPERATURE NECESSARY TO SATISFY SET POINT195

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWW CONTROLS OPERATION GUIDEFUNCTION1. TRANSMISSION SOURCE- Infra red transmission source2. POWER- Press to turn the fan coil on and off or vice versa.(Red LED left will light to indicate the control is on)3. MODE- To select desired operation mode.It will switch from one to another as shown.COOL - Cooling operation.DRY - Humidity control.HEAT - Heating operation.FAN - Fan only. No cooling or heating capability.AUTO - Operation mode will be selected automatically between HEAT andCOOL mode, depending upon the room temperature and SET temperature.4. FAN- To select fan speed. It will switch from one to another as shown below.- When the system temperature sensor is not calling for cool or heat the fan willrun at the speed previously entered in fan mode selection (high, medium or low).- If auto was the previously entered fan speed in cooling: The fan will run at lowspeed until the temperature sensor calls for either heating or cooling at whichpoint the fan will return to auto speed controlFan speed sequence196

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWW CONTROLS OPERATION GUIDEFUNCTION5. TEMPERATURE SETTING- Press “▲” to increase set temperature.- Press “▼” to decrease set temperature.- Press “▲” and “▼” Simultaneously to toggle between °C and °F display mode.- Temperature range: 16°C to 30°C in °C display mode and 60°F to 86°F in °Fdisplay mode.6. DELAY TIMER SETTING- The delay timer is capable of delaying both on and off functions. The delayfeature will take affect in all modes with the exception of the sleep mode. Eachtime the “▲” and “▼” is pressed it increases or decreases the On or OFF setpoint by 1 hour; up to a maximum of 18 hours.To set the OFF DELAY:-With the system in operation, enter the system OFF time by pressing the “▲”button to the desired number of hours ahead that the system will be allowed torun. When the number of hours entered has elapsed the system will turn off.To set the ON DELAY:- Set the on delay by entering the desired mode of operation (fan, heat, cool andthe appropriate temperature. This will be the settings the system will followwhen operation resumes. After setting the mode and any applicabletemperature with the control, turn the remote off. Now enter the number ofhours to elapse before operation resumes by pressing the “▲” button on theremote to the desired number. When the time (in hours) entered has elapsed,the system will resume operation according to the pre-set mode andtemperature.197

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWW CONTROLS OPERATION GUIDE7. CANCEL- To cancel any setting on the delay timer.8. LOUVER- Two different functions are available:1. To set the louver stop position. There are 4 angles available. The sequence is asfollows.2. To set the louver swing (continuous motion). The sequence is as follows.9. SLEEP- This function when selected will allow the user to determine a “sleep” period. Incooling the selected temperature will rise to 1° above set point in 1/2 hour,rising to 2° in 1 hour, rising again to 4° after 2 hours of the SLEEP CYCLE.SLEEP FUNCTION DISPLAY10. DRY- This function operates to control humidity within a conditioned space. Itmeasures the difference between set point and the actual room temperature.An algorithm determines how far above set point the actual room temperature isto set point temperature and selects periods of water valve operation and low fanoperation. The greater the difference between room temperature and set pointtemperature prompts greater run time with less temperature. With lesstemperature differences, periods of fan and valve operation are called for invarying increments as determined by the difference. In this mode (low speed) fanoperation will start 30 seconds after valve has opened and stops 30 seconds aftervalve has closed.198

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWW CONTROLS OPERATION GUIDE11. AUTO- This function will automatically control the system switching between heating andcooling operation. If the preset auto mode is cooling, a switch to heatingoperation will begin only if the actual room temperature is 7° below selectedcontrol set point. If the present auto mode is heating, a switch to cooling operationwill begin only when the room temperature is 3° above selected control set point.12. TRANSMISSION INDICATOR- Blinks twice to indicate that transmission has taken place between remote andreceiver.- Beeps indicate fan coil acknowledging receipt of transmission.TRANSMISSION INDICATOR13. HOW TO INSERT BATTERIES1. Remove the battery cover from the back of the remote.2. Insert the (2) AAA batteries. Ensure that the polarity of the batteries are as showninside of the battery compartment.3. Re-attach the battery compartment cover.199

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWW CONTROLS OPERATION GUIDEOptional Wired Control: EG-003LED MODE INDICATOR FOR REMOTE CONTROLLER:INDICATOR LIGHTS SETTING FUNCTIONRED-GREEN COOL COOLING OPERATION ONLYRED-RED HEAT HEATING OPERATION ONLYRED-BLINKING AUTO AUTO SELECTION BETWEEN HEAT & COOLRED-OFF FAN FAN OPERATION ONLY1. POWER- Press to turn the fan coil on and off or vice versa.2. MODE- To select desired operation mode.It will switch from one to another as shown.COOL - Cooling operation.HEAT - Heating operation.FAN - Fan only. No cooling or heating capability.AUTO - Operation mode will be selected automatically between HEAT andCOOL mode depending upon the room temperature and SET temperature.3. FAN- To select fan speed. It will switch from one to another as shown below.- When the system temperature sensor is not calling for cool or heat the fan will run atthe speed previously entered in fan mode selection (high, medium or low).- If auto was the previously entered fan speed in cooling: The fan will run at low speeduntil the temperature sensor calls for either heating or cooling at this point the fanwill return to auto speed controlFan Speed Sequence200

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWW CONTROLS OPERATION GUIDEFUNCTION4. TEMPERATURE SETTING- Press “▲” to increase set temperature.- Press “▼” to decrease set temperature.- Press “▲” and “▼” Simultaneously to toggle between °C and °F display mode.- Temperature range: 16° C to 30°C in °C display mode and 60°F to 86°F in °Fdisplay mode.5. CANCEL- To cancel any setting on the delay timer.6. LOUVER- Two different functions are available:1. To set the louver stop position. There are 4 angles available. The sequence is as follows.2. To set the louver swing (continuous motion). The sequence is as follows.7. AUTO- This function will automatically control the system switching between heating andcooling operation. If the present auto mode is cooling, a switch to heatingoperation will begin only if the actual room temperature is 7° below selectedcontrol set point. If the present auto mode is heating, a switch to cooling operationwill begin only when the room temperature is 3° above selected control set point.201

MHWW-09-H-1 & MHWW-12-H-1 Wiring Diagram208/230/-1-50/60202

MHWW-18-H-1 Wiring Diagram208/230/-1-50/60203



MHWW CERTIFIED DRAWING206

CFFWA Chilled/Hot WaterUniversal Mount Fan Coil2-Pipe Heat / Cool Fan Coil 12,000 - 60,000 BTUH207

CFFWA NOMENCLATURE BREAKDOWN2-Pipe Heat/Cool Universal Mount Fan CoilCFFWA-XX - 1 - U2-Pipe Heat/CoolControl Option24 vac ReadyVoltage1=208/230/-1-50/60Nominal CFM04=40006=60008=80012=120016=160020=2000Available Model NumbersCFFWA-04-1-UCFFWA-06-1-UCFFWA-08-1-UCFFWA-12-1-UCFFWA-16-1-UCFFWA-20-1-U208

HVAC Guide SpecificationsChilled and Hot Water Universal Mount Fan Coil2-PipeNominal Size:12,000 – 60,000 BTUHMultiaqua Model Number:CFFWA-04-1-UCFFWA-06-1-UCFFWA-08-1-UCFFWA-12-1-UCFFWA-16-1-UCFFWA-20-1-UPart 1-General1.01 System DescriptionMultiaqua Chilled Water Fan Coils are manufactured with galvanized steel and high impact molded polymers.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested chilled and hot water fan coil.2. Shall be assembled with high quality.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of high impact polymers.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Shall be available in 208/230-1-50/60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.4. Unit shall contain a swing motor to modulate the discharge air.D. Blower Wheels:1. Blower wheels are tangential and dynamically balanced.E. Water Coil:1. Manufactured with water coils containing 3/8” copper tubing mechanically bonded to aluminumfins.2. Coils shall be factory tested to 350 psig.F. Drain Pan:1. All drain pans shall be coated on both the interior and exterior with baked polyester powder toresist corrosion.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a drain tubing that is accessible from the back, bottom and side of the unit.209

G. Filters:1. Unit shall contain 65% washable filters.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. Unit shall include a terminal block that is capable of incorporating a 24 vac thermostat.C. Controls shall be capable of incorporating an optional hard-wired thermostat.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Electrical shall include a terminal block.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.210

CFFWA Product SpecificationsModel NumberHeight(in)Length(in)Physical DataDepth(in)Weight(lbs)CoolingRowsFPIWaterInlet(in)WaterOutlet(in)CFFWA-04-1-U 25.27 40.31 9.01 79.37 2-13 1/2 1/2 1/2CFFWA-06-1-U 25.27 40.31 9.01 83.77 3-13 1/2 1/2 1/2CFFWA-08-1-U 25.27 40.31 9.01 88.18 4-13 1/2 1/2 1/2CFFWA-12-1-U 25.27 52.13 9.01 116.84 3-13 3/4 3/4 1/2CFFWA-16-1-U 25.27 75.78 9.01 158.73 3-14 3/4 3/4 1/2CFFWA-20-1-U 25.27 75.78 9.01 163.14 4-14 1 1 1/2Drain(in)Electrical DataModel NumberCFMVolts/Phase/HertzMotorHPFull LoadAmpacityFuse or HACRCircuit Breaker PerCircuitMinimumAmpsMaximumAmpsCFFWA-04-1-U 436 1/15 0.56 .70 2CFFWA-06-1-U 520 1/15 0.56 .70 2CFFWA-08-1-U 650 1/8 0.83 1.04 3CFFWA-12-1-U 735CFFWA-16-1-U 1360CFFWA-20-1-U 1335208/230-1-50/601/8 &1/201/8 &1/81/8 &1/82.09 2.49 43.18 3.59 53.18 3.59 5These specifications are subject to change without notice.211

CFFWA Chilled Water Performance DataCFM436 42CFFWA-04 COOLING CAPACITIESEWT GPM ENTERING AIR TEMPERATURE (F)(°F) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.1.52.02.53.0TC 10.5 8.0SC 7.9 7.0WPD 3.6 3.6TC 11.8 9.0SC 8.4 7.4WPD 6.0 6.0TC 12.7 9.7SC 8.7 7.6WPD 9.0 9.0TC 13.3 10.2SC 9.0 7.8WPD 12.6 12.6CFM436 45CFFWA-04 COOLING CAPACITIESEWT GPM ENTERING AIR TEMPERATURE (F)(°F) 80° D.B. / 67° W.B. 75° D.B. / 63° W.B.1.52.02.53.0TC 9.6 7.3SC 7.6 6.7WPD 3.6 3.6TC 10.8 8.3SC 8.1 7.1WPD 6.0 6.0TC 11.6 8.9SC 8.3 7.3WPD 9.0 9.0TC 12.2 9.3SC 8.6 7.5WPD 12.6 12.6These specifications are subject to change without notice.212






CFFWA Hot Water Performance DataCFFWA-04 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°1.5 3.6 13 15.6 18.1 20.7 23.3 25.9 28.5 31.1 33.72 6 13.6 16.3 19 21.7 24.4 27.1 29.8 32.5 35.250 4362.5 9 13.9 16.7 19.5 22.3 25 27.8 30.6 33.4 36.23 12.6 14.2 17 19.9 22.7 25.2 28.4 31.2 34 36.9CFFWA-04 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°1.5 3.6 10.4 13 15.6 18.1 20.7 23.3 25.9 28.5 31.12 6 10.8 13.6 16.3 19 21.7 24.4 27.1 29.8 32.560 4362.5 9 11.1 13.9 16.7 19.5 22.3 25 27.8 30.6 33.43 12.6 11.5 14.4 17.2 20.1 23 25.9 28.7 31.6 34.5CFFWA-04 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°1.5 3.6 7.8 10.4 13 15.6 18.1 20.7 23.3 25.9 28.52 6 8.1 10.8 13.6 16.3 19 21.7 24.4 27.1 29.870 4362.5 9 8.3 11.1 13.9 16.7 19.5 22.3 25 27.8 30.63 12.6 8.5 11.3 14.2 17 19.9 22.7 25.5 28.4 31.2CFFWA-04 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°1.5 3.6 5.2 7.8 10.4 13 15.6 18.1 20.7 23.3 25.92 6 5.4 8.1 10.8 13.6 16.3 19 21.7 24.4 27.180 4362.5 9 5.6 8.3 11.1 13.9 16.7 19.5 22.3 25 27.83 12.6 5.7 8.5 11.3 14.2 17 19.9 22.7 25.5 28.4These specifications are subject to change without notice.218

CFFWA Hot Water Performance DataCFFWA-06 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°3 14.7 20.9 25 29.2 33.4 37.5 41.7 45.9 50.1 54.23.5 19.3 21.2 25.5 29.7 33.9 38.2 42.4 46.7 50.9 55.250 5204 24.3 21.5 25.7 30 34.3 38.6 42.9 47.2 51.5 55.84.5 29.9 21.6 25.9 30.2 34.5 38.9 43.2 47.5 51.8 56.1CFFWA-06 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°3 14.7 16.7 20.9 25 29.2 33.4 37.5 41.7 45.9 50.13.5 19.3 17 21.2 25.5 29.7 33.9 38.2 42.4 46.7 50.960 5204 24.3 17.2 21.5 25.7 30 34.3 38.6 42.9 47.2 51.54.5 29.9 17.3 21.6 25.9 30.2 34.5 38.9 43.2 47.5 51.8CFFWA-06 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°3 14.7 12.5 16.7 20.9 25 29.2 33.4 37.5 41.7 45.93.5 19.3 12.7 17 21.2 25.5 29.7 33.9 38.2 42.4 46.770 5204 24.3 12.9 17.2 21.5 25.7 30 34.3 38.6 42.9 47.24.5 29.9 13 17.3 21.6 25.9 30.2 34.5 38.9 43.2 47.5CFFWA-06 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°3 14.7 8.3 12.5 16.7 20.9 25 29.2 33.4 37.5 41.73.5 19.3 8.5 12.7 17 21.2 25.5 29.7 33.9 38.2 42.480 5204 24.3 8.6 12.9 17.2 21.5 25.7 30 34.3 38.6 42.94.5 29.9 8.7 13 17.3 21.6 25.9 30.2 34.5 38.9 43.2These specifications are subject to change without notice.219

CFFWA Hot Water Performance DataCFFWA-08 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°4 8.3 25.2 30.3 35.3 40.4 45.4 50.4 55.5 60.5 65.64.5 10.3 25.6 30.7 35.8 40.9 46 51.2 56.3 61.4 66.550 6505 12.6 25.9 31 36.2 41.4 46.6 51.7 56.9 62.1 67.35.5 15 26.1 31.3 36.6 41.8 47 52.2 57.5 62.7 67.9CFFWA-08 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°4 8.3 20.2 25.2 30.3 35.3 40.4 45.4 50.4 55.5 60.54.5 10.3 20.5 25.6 30.7 35.8 40.9 46 51.2 56.3 61.460 6505 12.6 20.7 25.9 31 36.2 41.4 46.6 51.7 56.9 62.15.5 15 20.9 26.1 31.3 36.6 41.8 47 52.2 57.5 62.7CFFWA-08 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°4 8.3 15.1 20.2 25.2 30.3 35.3 40.4 45.4 50.4 55.54.5 10.3 15.3 20.5 25.6 30.7 35.8 40.9 46 51.2 56.370 6505 12.6 15.5 20.7 25.9 31 36.2 41.4 46.6 51.7 56.95.5 15 15.7 20.9 26.1 31.3 36.6 41.8 47 52.2 57.5CFFWA-08 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°4 8.3 10.1 15.1 20.2 25.2 30.3 35.3 40.4 45.4 50.44.5 10.3 10.2 15.3 20.5 25.6 30.7 35.8 40.9 46 51.280 6505 12.6 10.3 15.5 20.7 25.9 31 36.2 41.4 46.6 51.75.5 15 10.4 15.7 20.9 26.1 31.3 36.6 41.8 47 52.2These specifications are subject to change without notice.220

CFFWA Hot Water Performance DataCFFWA-12 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°6.5 12.3 42.3 50.7 59.2 67.7 76.1 84.6 93 101.5 109.97 14.1 42.7 51.2 59.7 68.3 76.8 85.4 93.9 102.4 11150 7357.5 16.1 43 51.6 60.2 68.8 77.5 86.1 94.7 103.3 111.98 18.2 43.3 52 60.7 69.4 78 86.7 95.4 104 112.7CFFWA-12 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°6.5 12.3 33.8 42.3 50.7 59.2 67.7 76.1 84.6 93 101.57 14.1 34.1 42.7 51.2 59.7 68.3 76.8 84.5 93.9 102.460 7357.5 16.1 34.4 43 51.6 60.2 68.8 77.5 86.1 94.7 103.38 18.2 34.7 43.3 52 60.7 69.4 78 86.7 95.4 104CFFWA-12 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°6.5 12.3 25.4 33.8 42.3 50.7 59.2 67.7 76.1 84.6 937 14.1 25.6 34.1 42.7 51.2 59.7 68.3 76.8 85.4 93.970 7357.5 16.1 25.8 34.4 43 51.6 60.2 68.8 77.5 86.1 94.78 18.2 26 34.7 43.3 52 60.7 69.4 78 86.7 95.4CFFWA-12 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°6.5 12.3 16.9 25.4 33.8 42.3 50.7 59.2 67.7 76.1 84.67 14.1 17.1 25.6 34.1 42.7 51.2 59.7 68.3 76.8 85.480 7357.5 16.1 17.2 25.8 34.4 43 51.6 60.2 68.8 77.5 86.18 18.2 17.3 26 34.7 43.3 52 60.7 69.4 78 86.7These specifications are subject to change without notice.221

CFFWA Hot Water Performance DataCFFWA-16 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°9 26 54.5 65.5 76.4 87.3 98.2 109.1 120 130.9 141.89.5 28.8 54.9 65.8 76.8 87.8 98.8 109.7 120.7 131.7 142.650 136010 31.8 55.1 66.2 77.2 34.9 99.3 110.3 121.3 132.3 143.410.5 34.9 55.4 66.5 77.5 88.6 99.7 110.8 121.8 132.9 144CFFWA-16 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°9 26 43.6 54.5 65.5 76.4 87.3 98.2 109.1 120 130.99.5 28.8 43.9 54.9 65.8 76.8 87.8 98.8 109.7 120.7 131.760 136010 31.8 44.1 55.1 66.2 77.2 88.2 99.3 110.3 121.3 132.310.5 34.9 44.3 55.4 66.5 77.5 88.6 99.7 110.8 121.8 132.9CFFWA-16 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°9 16 32.7 43.6 54.5 65.5 76.4 87.3 98.2 109.1 1209.5 28.8 32.9 43.9 54.9 65.8 76.8 87.8 98.8 109.7 120.770 136010 31.8 33.1 44.1 55.1 66.2 77.2 88.2 99.3 110.3 121.310.5 34.9 33.2 44.3 55.4 66.5 77.5 88.6 99.7 110.8 121.8CFFWA-16 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°9 26 21.8 32.7 43.6 54.5 65.5 76.4 87.3 98.2 109.19.5 28.8 21.9 33.9 43.9 54.9 65.8 76.8 87.8 98.8 109.780 136010 31.8 22.1 33.1 44.1 55.1 66.2 77.2 88.2 99.3 110.310.5 34.9 22.2 33.2 44.3 55.4 66.5 77.5 88.6 99.7 110.8These specifications are subject to change without notice.222

CFFWA Hot Water Performance DataCFFWA-20 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°11 13.8 51.9 62.3 72.7 83 93.4 103.8 114.2 124.6 134.911.5 15 52.1 62.6 73 83.4 93.8 104.3 114.7 125.1 135.550 133512 16.3 52.3 62.8 73.3 83.8 94.2 104.7 115.2 125.6 136.112.5 17.6 52.5 63 73.6 84.1 94.6 105.1 115.6 126.1 136.6CFFWA-20 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°11 13.8 41.5 51.9 62.3 72.7 83 93.4 103.8 114.2 124.611.5 15 41.7 52.1 62.6 73 83.4 93.8 104.3 114.7 125.160 133512 16.3 41.9 52.3 62.8 73.3 83.8 94.2 104.7 115.2 125.612.5 17.6 42 52.5 63 73.6 84.1 94.6 105.1 115.6 126.1CFFWA-20 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°11 13.8 31.1 41.5 51.9 62.3 72.7 83 93.4 103.8 114.211.5 15 31.3 41.7 52.1 62.6 73 83.4 93.8 104.3 114.770 133512 16.3 31.4 41.9 52.3 62.8 73.3 83.8 94.2 104.2 115.212.5 17.6 31.5 42 52.5 63 73.6 84.1 94.6 105.1 115.6CFFWA-20 HEATING CAPACITIESENTERINGENTERING WATER TEMPERATURE (°F)CFM GPM WPDAIR (°F)100° 110° 120° 130° 140° 150° 160° 170° 180°11 13.8 20.8 31.1 41.5 51.9 62.3 72.7 83 93.4 103.811.5 15 20.9 31.3 41.7 52.1 62.6 73 83.4 93.8 104.380 133512 16.3 20.9 31.4 41.9 52.3 62.8 73.3 83.8 94.2 104.712.5 17.6 21 31.5 42 52.5 63 73.6 84.1 94.6 105.1These specifications are subject to change without notice.223

223

CFFWA CFM and Glycol AdjustmentsCAPACITY CORRECTION FACTORSMODEL # CFFWA-04 CFFWA-06 CFFWA-08 CFFWA-12 CFFWA-16 CFFWA-20CFM TC SC TC SC TC SC TC SC TC SC TC SC325 0.88 0.84350 0.90 0.86375 0.92 0.88400 0.95 0.90 0.91 0.87425 0.98 0.92 0.93 0.89450 0.95 0.91500 0.98 0.93 0.87 0.84525 0.89 0.86550 0.92 0.88575 0.94 0.90 0.88 0.82600 0.96 0.92 0.90 0.84625 0.98 0.94 0.92 0.86650 0.94 0.89675 0.96 0.91700 0.98 0.9310251050 0.77 0.731075 0.76 0.72 0.79 0.751100 0.78 0.74 0.81 0.771125 0.80 0.76 0.83 0.791150 0.82 0.78 0.85 0.811175 0.84 0.80 0.87 0.831200 0.86 0.82 0.89 0.851225 0.88 0.84 0.91 0.871250 0.91 0.87 0.93 0.891275 0.93 0.89 0.95 0.911300 0.95 0.91 0.97 0.931325 0.97 0.93 0.99 0.951350 0.99 0.95 1.00 1.00Propylene Glycol & GPM Adjustment FactorsPropyleneGlycol %CapacityReductionGPM Adjustment =100% CapacityAmbientTemp26° F 10% x 0.99 x 1.0120° F 20% x 0.98 x 1.038° F 30% x 0.98 x 1.07-5° F 40% x 0.97 x 1.11-28° F 50% x 0.96 x 1.16Example:30% Propylene Glycol Solution.System capacity x 0.98GPM x 1.07These specifications are subject to change without notice224

225

INSTALLATION & OPERATINGMANUALCFFWA Universal Mount Fan Coils12,000-60,000 BTUH-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal or vertical configuration. Fan coilcan be mounted on a wall or ceiling. Seefigure 2 for fan coil and mounting bracketdimensions.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (lbs)CFFWA-04-1-U 79.37CFFWA-06-1-U 83.77CFFWA-08-1-U 88.18CFFWA-12-1-U 116.84CFFWA-16-1-U 158.73CFFWA-20-1-U 163.14Figure 1226

INSTALLATION & OPERATINGMANUALCFFWA Universal Mount Fan Coil12,000-60,000 BTUHCFFWA Mounting BracketDimensions (in)Model Number A BCFFWA-04-1-U 36.49 13.00CFFWA-06-1-U 36.49 13.00CFFWA-08-1-U 36.49 13.00CFFWA-12-1-U 48.30 13.00CFFWA-16-1-U 71.97 13.00CFFWA-20-1-U 71.97 13.00ABACKB typFigure 2227

INSTALLATION & OPERATINGMANUALCFFWA Universal Mount Fan Coils12,000 – 60,000 BTUH-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORINSTALLING THE MOUNTINGBRACKETS AND UNIT1. The unit should be installed forhorizontal and vertical dischargeapplications only.Figure 32. Select position for unit and definedirection of water pipe, drain andelectrical wiring. Access to the above canbe obtained from the right hand sidebottom, back and side. See page 229 foraccess dimensions.Figure 3, 4 and 53. Remove mounting brackets from bothsides of unit.Figure 4Figure 64. Prepare mounting bolts for mountingunit under ceiling or on a wall at thedistance provided in figure 2.5. Select a location that permits even airflow throughout the room.6. Select a location that has enoughservice space when the unit is mountedunder the ceiling or on the wallFigure 5228

INSTALLATION & OPERATINGMANUALCFFWA Universal Mount Fan Coils12,000 – 60,000 BTUHPiping Locations229

INSTALLATION & OPERATINGMANUALCFFWA Universal Mount Fan Coils12,000 – 60,000 BTUH-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORINSTALLING THE MOUNTINGBRACKETS AND UNIT7. Carefully place fan coil into place andalign mounting holes in fan coil to theholes in the mounting bracket. Typicalboth sides.Figure 6Figure 68. Connections to the indoor unit areflared connections for both the inlet andoutlet to the fan coil.Figure 79. Ensure tubing and fittings are in linewith another before tightening nut toallow concentric seating of tube ontoflare nut as to prevent leakage.Figure 710. Insulate both the inlet and outletliquid solution lines to preventcondensation leakage.11. Connect the field drain line to theclear drain tubing provided on the drainpan of the fan coil. Ensure the drain linehas a ¼” of fall per foot. Insulate thecondensate drain line to preventsweating.Figure 8230

CFFWA-xx-1-U Wiring Diagram208/230/-1-50/60231

CFFWA CERTIFIED DRAWING232

CWA2 Chilled Water Fan CoilWith or Without Electric Heat2-Pipe Heat / Cool Fan Coil 18,000 - 60,000 BTUH233

CWA2 NOMENCLATURE BREAKDOWN2-Pipe Heat/Cool with Electric Heat Multiposition Fan CoilNominal BTUHxx- CWA2- xxKW Electric Heat00 = 0KW18 = 18,000 05 = 5KW24 = 24,000 08 = 8KW36 = 36,000 10 = 10KW48 = 48,000 15 = 15KW60 = 60,000 20 = 20KW2-Pipe Heat/Cool W/ Electric HeatNote:The CWA2 is only available in 208/230-1-60Available Model Numbers18CWA2-00 18CWA2-05 18CWA2-08 18CWA2-10 18CWA2-1524CWA2-00 24CWA2-05 24CWA2-08 24CWA2-10 24CWA2-1536CWA2-00 36CWA2-05 36CWA2-08 36CWA2-10 36CWA2-1548CWA2-00 48CWA2-05 48CWA2-08 48CWA2-10 48CWA2-1560CWA2-00 60CWA2-05 60CWA2-08 60CWA2-10 60CWA2-15234

HVAC Guide SpecificationsChilled/ Hot Water W/Electric Heat Multi-Position Fan Coil2-PipeNominal Size:18,000 – 60,000 BTUHMultiaqua Model Number:18CWA224CWA236CWA248CWA260CWA2Part 1-General1.01 System DescriptionMultiaqua Chilled Water Fan Coils are manufactured with heavy gauge galvanized steel to resist corrosion.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested multi-position chilled/ hot water with electric heatfan coil.2. Shall be assembled with high quality.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with baked polyester powder.2. Shall be internally insulated to insure quiet operation.3. Cabinet shall be capable of being installed in a vertical or horizontal position.C. Fan Motors:1. Shall be available in 208/230-1-60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Internal overload protected.D. Blower Wheels:1. Blower wheels are forward curved and dynamically balanced.E. Water Coil:1. Manufactured with water coils containing 3/8” copper tubing mechanically bonded to aluminumfins.2. Coils shall be factory tested to 350 psig.3. Coil shall contain manual air bleed port.F. Drain Pan:1. Drain pan shall be molded with high impact polymers.2. Pan shall contain a primary and secondary drain connection.3. Pan shall be capable of draining in the vertical and horizontal positions without changing the panconfiguration.235

G. Filters:1. Unit shall contain a filter door for easy access to the filter.2. A filter track shall be provided.3. Unit shall come supplied with a 1” throwaway filter.H. Electric Heaters:1. Unit shall be capable of incorporating an electric heat package.2. Electric heaters shall be of the open wire type.3. Electric heat packages shall contain non-fused breakers, sequencers and safeties.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. Unit shall include a terminal block that is capable of incorporating a 24 vac thermostat.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.B. Electric heat package shall contain non-fusible breakers and high temperature limits.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Electrical shall include a terminal block.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.236

ModelNumberHeight(in)CWA2 Product SpecificationsLength(in)Depth(in)Physical DataWeight(lbs)237CoolingRowsFPICopperDiameter(in)WaterInlet(in)WaterOutlet(in)18CWA2 39.75 17.50 21.00 118.00 4-14 3/8 1/2 1/2 3/424CWA2 39.75 17.50 21.00 118.00 4-14 3/8 1/2 1/2 3/436CWA2 39.75 17.50 21.00 145.00 4-14 3/8 3/4 3/4 3/448CWA2 49.75 21.50 25.00 170.00 4-14 3/8 3/4 3/4 3/460CWA2 49.75 21.50 25.00 180.00 4-14 3/8 3/4 3/4 3/4Electrical DataModelNumberModelNumberNominalCFMNominalCFM18CWA2-XX 60024CWA2-XX 90036CWA2-XX 120048CWA2-XX 160060CWA2-XX 2000Volts/Phase/HertzMotorHPKWElectric HeatFull LoadAmpacityMinimumAmpacityMaximumBreaker240V 208V 240V 208V 240V 208V0 0 2.1 1.9 15 155 3.8 29 25 30 258 6 44 39 45 4010 7.5 55 48 60 500 0 2.1 1.9 15 155 3.8 29 25 30 258 6 44 39 45 4010 7.5 55 48 60 500 0 3.5 3.4 15 155 3.8 30 27 30 308 6 46 40 50 4010 7.5 56 49 60 5015 11.3 56/26 49/23 60/30 50/300 0 4 3.9 15 155 3.8 30 27 30 358 6 46 41 50 4510 7.5 57 50 60 5015 11.3 53/30 46/27 60/30 50/3020 15 57/53 50/46 60/60 50/500 0 6 5.9 15 155 3.8 32 29 35 308 6 48 42 50 4510 7.5 59 52 60 6015 11.3 53/32 46/29 60/35 50/3020 15 59/53 52/46 60/60 60/50These specifications are subject to change without notice.Fuse or HACRCircuit Breaker PerCircuitMinimumAmpsMaximumAmps18CWA2 600 1/4 1.7 2.13 424CWA2 800 1/3 2.8 3.50 736CWA2 1200 1/3 2.8 3.50 748CWA2 1600 1/3 3.2 4.00 860CWA2 20003/4 4.8 6.00 11208/230-1-60Drain(in)

CWA2 Chilled Water Performance DataNOMINALCFM18CWA2-XX COOLING CAPACITIESEWT(°F)400 42GPMWPD3.0 1.84.5 3.96.0 6.8ENTERING AIRTEMPERATURE80° D.B. / 67° W.B.TC 12.2SC 9.2APD 0.1TC 13.4SC 10.1APD 0.1TC 14.2SC 10.6APD 0.1NOMINALCFM18CWA2-XX COOLING CAPACITIESEWT(°F)600 42GPMWPD3.5 2.45.0 4.86.5 7.9ENTERING AIRTEMPERATURE80° D.B. / 67° W.B.TC 16.6SC 12.5APD 0.18TC 18.1SC 13.6APD 0.18TC 19.1SC 14.4APD 0.18NOMINALCFM18CWA2-XX COOLING CAPACITIESEWT(°F)400 45GPMWPD3.0 1.84.5 3.96.0 6.8ENTERING AIRTEMPERATURE80° D.B. / 67° W.B.TC 11.5SC 9.2APD 0.1TC 12.5SC 10.0APD 0.1TC 13.2SC 10.5APD 0.1NOMINALCFM18CWA2-XX COOLING CAPACITIESEWT(°F)600 45GPMWPD3.5 2.45.0 4.86.5 7.9ENTERING AIRTEMPERATURE80° D.B. / 67° W.B.TC 15.7SC 12.6APD 0.18TC 17.0SC 13.6APD 0.18TC 17.9SC 14.3APD 0.18These specifications are subject to change without notice.238





CWA2 Hot Water Performance DataENTERINGAIR (°F)65 400ENTERINGAIR (°F)65 600ENTERINGAIR (°F)65 600ENTERINGAIR (°F)65 80018CWA2-00 HEATING CAPACITIESCFM GPM WPD APD140° 150° 160° 170° 180°3.0 1.6 29749 32859 35970 39790 436204.5 3.5 0.08 31058 34314 37570 41560 455406.0 6.031658 34979 38300 42360 4642018CWA2-00 HEATING CAPACITIESCFM GPM WPD APD140° 150° 160° 170° 180°3.5 2.2 41050 45320 49590 54890 601905.0 4.3 0.15 43416 47948 52480 58100 636606.5 7.144664 49337 54010 59750 6549024CWA2-00 HEATING CAPACITIESCFM GPM WPD APD140° 150° 160° 170° 180°3.0 2.2 41261 45555 49850 55150 605004.5 4.7 0.14 44330 48955 53580 59270 650006.0 8.245762 50566 55370 61240 6710024CWA2-00 HEATING CAPACITIESCFM GPM WPD APD140° 150° 160° 170° 180°3.5 2.9 51696 57073 62450 69125 758005.0 5.8 0.21 55781 61590 67400 74600 817906.5 9.657970 64050 70130 77590 85000These specifications are subject to change without notice.243

CWA2 Hot Water Performance DataENTERINGAIR (°F)65 1000ENTERINGAIR (°F)65 1200ENTERINGAIR (°F)65 1400ENTERINGAIR (°F)65 1600CFM GPM WPD APD36CWA2-00 HEATING CAPACITIES140° 150° 160° 170° 180°4.0 2.1 62130 68265 75000 83100 911006.0 4.6 0.23 68302 75401 82500 83100 911008.0 8.171508 78954 86400 95600 104850CFM GPM WPD APD36CWA2-00 HEATING CAPACITIES140° 150° 160° 170° 180°5.0 3.3 73792 81446 89100 98650 1082006.5 5.4 0.28 78566 86733 94900 105000 1152008.0 8.181635 90119 98600 109200 119700CFM GPM WPD APD48CWA2-00 HEATING CAPACITIES140° 150° 160° 170° 180°4.5 1.2 81056 89428 97800 108300 1188506.0 2.2 0.24 88660 97830 107000 118500 1300007.5 3.393529 103244 112960 125000 137140CFM GPM WPD APD48CWA2-00 HEATING CAPACITIES140° 150° 160° 170° 180°6.0 2.2 95992 105921 115850 128300 1407508.0 3.8 0.25 103596 114348 125100 138500 15190010.0 5.8108411 119680 130950 144945 158960These specifications are subject to change without notice.244

CWA2 Hot Water Performance DataENTERINGAIR (°F)65 1600ENTERINGAIR (°F)65 2000CFM GPM WPD APD60CWA2-00 HEATING CAPACITIES140° 150° 160° 170° 180°6.5 2.8 102300 112950 123600 136800 1500008.5 4.6 0.19 109120 120510 131900 145950 16000010.5 6.9113451 131204 137160 151750 166350CFM GPM WPD APD60CWA2-00 HEATING CAPACITIES140° 150° 160° 170° 180°7.0 3.2 119350 131760 144170 159590 17500010.0 6.3 0.27 131285 144967 158650 175580 19250013.0 10.5138037 152443 166850 184600 202400These specifications are subject to change without notice.245

CWA2 CFM and Glycol AdjustmentsModel Motor CFM vs. ESPNumber Speed 0.1 0.2 0.3 0.4 0.5High 650 600 550 490 42018CWA-XX Medium 550 500 440 380 310Low 500 460 330 - -High 950 900 850 790 72024CWA-XX Medium 850 800 740 680 610Low 700 660 610 550 480High 1250 1200 1120 1060 100036CWA-XX Medium 1070 1020 970 920 860Low 900 870 840 790 720High 1850 1700 1650 1500 141048CWA-XX Medium 1750 1650 1450 1330 1180Low 1150 1060 1000 920 810High 2160 2100 2000 1940 188060CWA-XX Medium 2110 1980 1810 1750 1650Low 2000 1860 1670 1340 1200Example:24CWA2 @ 0.20” ESP produces 900 cfm.Locate 900 cfm (for the 24CWA2) on the Capacity Adjustment Factors on page 247. (TC =1.05 & SC = 1.05)Multiply the stated chilled water capacity for the 24CWA2 on page 239 or the hot water capacity on page 243 by the adjustment factors to achievethe capacity adjustment.Propylene Glycol & GPM Adjustment FactorsPropyleneGlycol %CapacityReductionGPM Adjustment =100% CapacityAmbientTemp26° F 10% x 0.99 x 1.0120° F 20% x 0.98 x 1.038° F 30% x 0.98 x 1.07-5° F 40% x 0.97 x 1.11-28° F 50% x 0.96 x 1.16Example:30% Propylene Glycol Solution.System capacity x 0.98GPM x 1.07These specifications are subject to change without notice.246

CWA2 Capacity Adjustment FactorsCWA2 CAPACITY CORRECTION FACTORSMODEL # 18CWA2 24CWA2 36CWA2CFM TC SC TC SC TC SC310 0.74 0.71325 0.75 0.72350 0.77 0.74375 0.79 0.77400 0.82 0.79425 0.84 0.81450 0.86 0.84475 0.88 0.86 0.76 0.75500 0.91 0.88 0.78 0.77525 0.93 0.92 0.80 0.79550 0.96 0.95 0.82 0.81575 0.98 0.97 0.84 0.83600 1.00 1.00 0.86 0.85625 1.02 1.03 0.87 0.84650 1.04 1.05 0.89 0.86675 0.90 0.88700 0.91 0.91720 0.93 0.92 0.61 0.59725 0.94 0.93 0.62 0.60750 0.96 0.96 0.64 0.62775 0.98 0.98 0.66 0.64800 1.00 1.00 0.67 0.65825 1.01 1.01 0.69 0.67850 1.02 1.03 0.71 0.70875 1.04 1.04 0.73 0.72900 1.05 1.05 0.75 0.74925 1.05 1.07 0.77 0.76950 1.05 1.08 0.79 0.78975 0.82 0.811000 0.85 0.841025 0.87 0.861050 0.89 0.881075 0.92 0.911100 0.94 0.931125 0.96 0.951150 0.97 0.971175 0.98 0.981200 1.00 1.001225 1.02 1.031250 1.04 1.05These specifications are subject to change without notice.247

CWA2 Capacity Adjustment FactorsCWA2 CAPACITY CORRECTIONFACTORSMODEL # 48CWA2 60CWA2CFM TC SC TC SC800 0.40 0.39825 0.42 0.40875 0.46 0.44925 0.48 0.46950 0.50 0.48975 0.52 0.501000 0.54 0.521025 0.55 0.531050 0.56 0.541075 0.58 0.561100 0.60 0.581125 0.62 0.601175 0.66 0.641200 0.67 0.65 0.40 0.391225 0.69 0.67 0.42 0.401250 0.71 0.70 0.44 0.421275 0.73 0.72 0.46 0.441300 0.75 0.74 0.47 0.451325 0.77 0.76 0.48 0.461350 0.79 0.78 0.50 0.481375 0.82 0.81 0.52 0.501400 0.85 0.84 0.54 0.521425 0.87 0.86 0.55 0.531450 0.89 0.88 0.56 0.541475 0.92 0.91 0.58 0.561500 0.94 0.93 0.60 0.581525 0.96 0.95 0.62 0.601550 0.97 0.97 0.64 0.621575 0.98 0.98 0.66 0.641600 1.00 1.00 0.67 0.651625 1.02 1.03 0.69 0.671650 1.04 1.05 0.71 0.701675 1.06 1.07 0.73 0.721725 1.08 1.09 0.77 0.761750 1.09 1.10 0.79 0.781775 1.10 1.11 0.82 0.811800 1.11 1.12 0.85 0.841825 1.13 1.14 0.87 0.861850 1.14 1.15 0.89 0.881875 0.92 0.911900 0.94 0.931925 0.96 0.951950 0.97 0.971975 0.98 0.982000 1.00 1.002025 1.02 1.032050 1.04 1.052075 1.06 1.072100 1.07 1.082125 1.08 1.092150 1.09 1.102160 1.10 1.11These specifications are subject to change without notice.248

249

INSTALLATION & OPERATINGMANUALCWA2 Chilled Water Fan Coil with Electric Heat18,000 – 60,000 BTUH-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in avertical or horizontal configuration. Seefigure 2 for fan coil only dimensions.The coil hand of connection is fieldreversible.FAN COILMODELNUMBERFigure 1APPROXIMATEDWEIGHTS (LBS)18CWA2 11824CWA2 11836CWA2 14548CWA2 17060CWA2 180250

INSTALLATION & OPERATINGMANUALCWA2 Chilled Water Fan Coil with Electric Heat18,000 – 60,000 BTUHPhysical Dimensions (in)Model Number A B C D E18CWA2 17.50 21.00 39.75 12.50 16.0024CWA2 17.50 21.00 39.75 12.50 16.0036CWA2 17.50 21.00 39.75 12.50 16.0048CWA2 21.50 25.00 49.75 17.25 19.5060CWA2 21.50 25.00 49.75 17.25 19.50Figure 2EDCBA251

INSTALLATION & OPERATINGMANUALCWA2 Chilled Water Fan Coil with Electric Heat18,000 – 60,000 BTUH-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORINSTALLING FAN COILThe CWA2 is a chilled water fancoil with electric heat designed formulti-position applications inclosets, attics or basements. Theyare field convertible to horizontalapplications without the need foradditional parts. Unit is not suitablefor down flow applications.Figure 3Figure 3 & 4CONVERTING FAN COILTO RIGHT HANDDISCHARGEThe CWA2 fan coil comes shippedfrom the factory assembled with aleft hand air dischargeconfiguration.Figure 41. To convert the fan coil to righthand discharge remove the threefront panels.2. Remove the three screws fromthe coil mounting brackets and pullentire coil assembly out of the fancoil.Figure 5Figure 5252

INSTALLATION & OPERATINGMANUALCWA2 Chilled Water Fan Coil with Electric Heat18,000 – 60,000 BTUH3. Remove the horizontal drain panfrom the coil and re-install it on theother side.Figure 64. Ensure the coil mounting bracketsare secure in order to avoid coilmisplacement inside the cabinet.Check coil slope to make sure thatthe drain pan slopes toward the drainoutlet. An incorrectly installed coilcould result in damages to the fancoil and property.Figure 6UP FLOW5. Re-install the three front panelspreviously removed in step one.6. The unit shall be suitable for 0”clearance to combustible materials.Sufficient clearance must be providedat the front of the fan coil to allowaccess for maintenance and servicing.7. The fan coil comes with oneprimary and one secondarycondensate drain connection perconfiguration. Ensure whenconnecting the field installedcondensate drain lines, the lower ofthe two fan coil drain connections ispiped into the buildings condensateremoval method.Figure 7 & 8SECONDARYDRAINPRIMARYDRAINSECONDARYDRAINFigure 7HORIZONTAL FLOWPRIMARYDRAINFigure 8253

INSTALLATION & OPERATINGMANUALCWA2 Chilled Water Fan Coil with Electric Heat18,000 – 60,000 BTUH8. All duct work must be installed perlocal and national codes. The return airduct and the return air openingprovided in the fan coil must have thesame area.Figure 9 & 10AELECTRICALAll wiring must comply with local andnational codes. High and low voltageterminal blocks are provided. Anelectrical plug is provided for the fieldinstallation of electric heat packages.Knockouts are provided in the cabinetfor field wiring of the electrical. Seepage 255 for electric heat packageinstallation instructions.A = High Voltage terminal block.B = Electric Heat Package ConnectionPlug.C = Low Voltage Terminal Block.Figure 11BFigure 9CWA2 Inlet Air DimensionsA B18CWA2 15 17.524CWA2 15 17.536CWA2 15 17.548CWA2 19.25 22.2560CWA2 19.25 22.25Figure 10CONTROLSA 24 vac transformer, fan relay andelectric heat sequencer are providedinside cabinet. All supplied controls arewired onto the low voltage terminalblock.BACFigure 11254

INSTALLATION & OPERATINGMANUALCWA2 Chilled Water Fan Coil with Electric Heat18,000 – 60,000 BTUHINSTALLATION INSTRUCTION FORB41HK-05, B41HK-08, B41HK-10, B41HK-15,B41HK-15,B15HK-05, B15HK-08, B15HK-10, B15HK-15 andB15HK-20ELECTRIC HEATER SLIDE IN MODULEHTO INSTALL THE SLIDE IN MODULE:1. Disconnect the unit from the power supply. Make sure no electricity is connected to the unit.2. Remove the door (H) from the unit.3. Remove the terminal box (L1)(L2) which is attached to the top panel (E) with two screws and clear the way for theslide in electric heat package.4. Remove the cover plate (F) from the heater deck.5. Unplug red and black wires from the terminal block (B) and move them to the right side of cabinet to allowinstallation of the electric heat package.6. Raise the electric heat package enough to clear the mounting tab. (D) Slide the electric heat package halfwaythrough. Plug the two wires (which were unplugged in step 5) to the left circuit breaker or provided .25” insulatedmale terminals (C), black wire on left connection (L1) red wire on right connection (L2).7. Slide the electric heat package in, secure with screws (A).8. Complete field line voltage wiring.9. Attach the breaker cover (K) to heater deck (G) with two blunt screws. Remove the plate (I) from the door (H),replace with breaker flange (J) and attach to the same plate with four screws.10. Secure terminal box (L) with two screws to the top panel (E), connect 6-pin plugs, and complete low voltage fieldwiring.11. Replace door (H) and check unit operation.Note: Breaker cover (K) and breaker flange (J) are shipped with electric heat package.255

INSTALLATION & OPERATINGMANUALCWA2 Chilled Water Fan Coil with Electric Heat18,000 – 60,000 BTUHPIPING9. This fan coil is supplied with onewater coil that can be used for chilledand or hot water. The coil has onededicated inlet and outlet. Ensure thatboth lines are insulated according tolocal and national building codes.Figure 1210. Condensate drains must be installedwith at least .25” of slope per foot awayfrom the fan coil. Since the drain pan islocated on the suction side of theblower a minimum trap of 1.5” must beinstalled in the drain line for properdrainage.INLETOUTLETROUTINE CHECK UP ANDSERVICEFigure 12This product is designed to providemany years of dependable, trouble freecomfort when properly maintained.Proper maintenance will consist ofroutine filter cleanings/changes, biannualcheck ups that include but notlimited to filter inspections, electricheater inspections /cleaning of theinternal electrical and heat transfercomponents by a qualified servicetechnician. Failure to provide periodiccheck ups and cleaning can result inexcessive operating cost and/orequipment failure.256

CWA2-00 Wiring Diagram208/230/-1-60257

CWA2 CERTIFIED DRAWING258

CWA4 Chilled & Hot Water Fan Coil4-Pipe Heat & Cool Fan Coil 24,000 - 60,000 BTUH259

CWA4 NOMENCLATURE BREAKDOWN4-Pipe Heat & Cool Multiposition Fan CoilNominal BTUH24=24,00036=36,00048=48,00060=60,000xx- CWA4- HWHot Water4-Pipe Heat & Cool Fan CoilNote:The CWA4 is only available in 120-1-60 vacAvailable Model Numbers24CWA2-HW36CWA4-HW48CWA4-HW60CWA4-HW260

HVAC Guide SpecificationsChilled & Hot Water Multi-Position Fan Coil4-PipeNominal Size:24,000 – 60,000 BTUHMultiaqua Model Number:24CWA436CWA448CWA460CWA4Part 1-General1.01 System DescriptionMultiaqua Chilled Water Fan Coils are manufactured with heavy gauge galvanized steel to resist corrosion.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested multi-position chilled & hot water fan coil.2. Shall be assembled with high quality.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with baked polyester powder.2. Shall be internally insulated to insure quiet operation.3. Cabinet shall be capable of being installed in a vertical or horizontal position.C. Fan Motors:1. Shall be available in 120-1-60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Internal overload protected.D. Blower Wheels:1. Blower wheels are forward curved and dynamically balanced.E. Water Coil:1. Manufactured with a chilled water coil containing 3/8” copper tubing mechanically bonded toaluminum fins.2. Manufactured with a hot water coil containing 3/8” copper tubing mechanically bonded toaluminum fins.3. Coils shall be factory tested to 350 psig.4. Coil shall contain manual air bleed port.F. Drain Pan:1. Drain pan shall be molded with high impact polymers.2. Pan shall contain a primary and secondary drain connection.3. Pan shall be capable of draining in the vertical and horizontal positions without changing the panconfiguration.261

G. Filters:1. Unit shall contain a filter door for easy access to the filter.2. A filter track shall be provided.3. Unit shall come supplied with a 1” throwaway filter.H. Hot Water Pump1. Unit shall contain an internal hot water circulating pump.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. Unit shall include a terminal block that is capable of incorporating a 24 vac thermostat.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Electrical shall include a terminal block.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.262

CWA4 Product SpecificationsModelNumberHeight(in)Length(in)Depth(in)Weight(lbs)CoolingRowsFPIPhysical DataHeatingRowsFPICopperDiameter(in)ChilledWaterInlet(in)ChilledWaterOutlet(in)HotWaterInlet(in)HotWaterOutlet(in)24CWA4 39.75 17.5 21 140 4-14 3-12 3/8 1/2 1/2 1/2 1/2 3/436CWA4 39.75 17.5 21 175 4-14 3-12 3/8 3/4 3/4 1/2 1/2 3/448CWA4 49.75 21.5 25 189 4-14 3-12 3/8 3/4 3/4 1/2 1/2 3/460CWA4 49.75 21.5 25 199 4-14 3-12 3/8 3/4 3/4 1/2 1/2 3/4Drain(in)ModelNumberNominalCFMVolts/Phase/HertzFanMotorHPElectrical DataFull LoadAmpacityPumpMotorHPHotWaterPumpFull LoadAmpacityFuse or HACRCircuit BreakerPer CircuitMinimumAmpsMaximumAmps24CWA4 800 1/4 3.2 1/40 0.52 3.77 936CWA4 1200 1/3 6.2 1/40 0.52 8.0 1548CWA4 1600 3/4 8.9 1/40 0.52 12 2060CWA4 20003/4 8.9 1/25 0.75 12 20120-1-60These specifications are subject to change without notice.263

CWA4 Chilled Water Performance DataNOMINALCFM24CWA4-HW COOLING CAPACITIESEWT(°F)600 42GPMWPD3.0 2.24.5 4.76.0 8.2ENTERING AIRTEMPERATURE80° D.B. / 67° W.B.TC 16.5SC 12.4APD 0.14TC 18.4SC 13.8APD 0.14TC 19.7SC 14.7APD 0.14NOMINALCFM24CWA4-HW COOLING CAPACITIESEWT(°F)800 42GPMWPD3.5 2.95.0 5.86.5 9.6ENTERING AIRTEMPERATURE80° D.B. / 67° W.B.TC 20.9SC 15.7APD 0.21TC 22.9SC 17.2APD 0.21TC 24.4SC 18.3APD 0.21NOMINALCFM24CWA4-HW COOLING CAPACITIESEWT(°F)600 45GPMWPD3.0 2.24.5 4.76.0 8.2ENTERING AIRTEMPERATURE80° D.B. / 67° W.B.TC 15.7SC 12.7APD 0.14TC 17.3SC 13.8APD 0.14TC 18.3SC 14.6APD 0.14NOMINALCFM24CWA4-HW COOLING CAPACITIESEWT(°F)800 45GPMWPD3.5 2.95.0 5.86.5 9.6ENTERING AIRTEMPERATURE80° D.B. / 67° W.B.TC 19.8SC 15.8APD 0.21TC 21.6SC 17.3APD 0.21TC 22.9SC 18.3APD 0.21These specifications are subject to change without notice.264




CWA4 Hot Water Performance Data24CWA4-HW HEATING CAPACITIESENTERINGCFM GPM WPDAIR (°F)130° 140° 150° 160° 170° 180°65 800 4.0 1.9 23000 26000 30300 33900 37600 4120036CWA4-HW HEATING CAPACITIESENTERINGCFM GPM WPDAIR (°F)130° 140° 150° 160° 170° 180°65 1200 4.0 1.4 45000 50000 60000 67000 74800 8200048CWA4-HW HEATING CAPACITIESENTERINGCFM GPM WPDAIR (°F)130° 140° 150° 160° 170° 180°65 1600 4.0 0.8 59000 67000 78000 88000 97000 10700060CWA4-HW HEATING CAPACITIESENTERINGCFM GPM WPDAIR (°F)130° 140° 150° 160° 170° 180°65 2000 7.0 2.5 69000 80000 91000 102500 113500 125000These specifications are subject to change without notice.268

CWA4 CFM and Glycol AdjustmentsModel Moter CFM vs. ESPNumber Speed 0.1 0.2 0.3 0.4 0.5High 850 800 760 720 68024CWA4-HW Medium 825 775 715 690 670Low 780 715 655 630 -High 1360 1310 1270 1230 119036CWA4-HW Medium 1340 1250 1170 1090 1060Low 1280 1170 1040 970 -High 1860 1740 1640 1530 148048CWA4-HW Medium 1780 1620 1510 1390 1280Low 1680 1500 1320 1250 -High 1950 1900 1845 1770 172060CWA4-HW Medium 1820 1750 1620 1470 1440Low 1750 1640 1390 1270 -Example:24CWA4 @ 0.20” ESP produces 800 cfm.Locate 800 cfm (for the 24CWA4) on the Capacity Adjustment Factors on page 270. (TC =1.00 & SC = 1.00)Multiply the stated chilled water capacity for the 24CWA4 or the hot water capacity by the adjustment factors to achieve the capacity adjustment.Propylene Glycol & GPM Adjustment FactorsPropyleneGlycol %CapacityReductionGPM Adjustment =100% CapacityAmbientTemp26° F 10% x 0.99 x 1.0120° F 20% x 0.98 x 1.038° F 30% x 0.98 x 1.07-5° F 40% x 0.97 x 1.11-28° F 50% x 0.96 x 1.16Example:30% Propylene Glycol Solution.System capacity x 0.98GPM x 1.07These specifications are subject to change without notice.269

CWA4 Capacity Adjustment FactorsCWA4 CAPACITY CORRECTION FACTORSMODEL # 24CWA4 36CWA4 48CWA4 60CWA4CFM TC SC TC SC TC SC TC SC625 0.87 0.84650 0.89 0.86675 0.90 0.88700 0.91 0.91725 0.94 0.93750 0.96 0.96775 0.98 0.98800 1.00 1.00825 1.01 1.01850 1.02 1.03970 0.81 0.80975 0.82 0.811000 0.85 0.841025 0.87 0.861050 0.89 0.881075 0.92 0.911100 0.94 0.931125 0.96 0.951150 0.97 0.971175 0.98 0.981200 1.00 1.001225 1.02 1.031250 1.04 1.05 0.71 0.701270 1.05 1.06 0.72 0.71 0.45 0.431275 1.06 1.07 0.73 0.72 0.46 0.441300 1.08 1.09 0.75 0.74 0.47 0.451325 1.09 1.10 0.77 0.76 0.48 0.461350 1.10 1.11 0.79 0.78 0.50 0.481360 1.11 1.12 0.81 0.80 0.51 0.491375 0.82 0.81 0.52 0.501400 0.85 0.84 0.54 0.521425 0.87 0.86 0.55 0.531450 0.89 0.88 0.56 0.541475 0.92 0.91 0.58 0.561500 0.94 0.93 0.60 0.581525 0.96 0.95 0.62 0.601550 0.97 0.97 0.64 0.621575 0.98 0.98 0.66 0.641600 1.00 1.00 0.67 0.651625 1.02 1.03 0.69 0.671650 1.04 1.05 0.71 0.701675 1.06 1.07 0.73 0.721700 1.07 1.08 0.75 0.741725 1.08 1.09 0.77 0.761750 1.09 1.10 0.79 0.781775 1.10 1.11 0.82 0.811800 1.11 1.12 0.85 0.841825 1.13 1.14 0.87 0.861850 1.14 1.15 0.89 0.881860 1.15 1.16 0.91 0.901875 0.92 0.911900 0.94 0.931925 0.96 0.951950 0.97 0.971975 0.98 0.982000 1.00 1.00These specifications are subject to change without notice.270

271

INSTALLATION & OPERATINGMANUALCWA4 Chilled & Hot Water Fan Coil24,000 – 60,000 BTUH-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation, ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in avertical or horizontal configuration. Seefigure 2 for fan coil only dimensions.The coil hand of connection is fieldreversible.FAN COILMODELNUMBERAPPROXIMATEDWEIGHTS (LBS)24CWA4 14036CWA4 17548CWA4 18960CWA4 199Figure 1272

INSTALLATION & OPERATINGMANUALCWA4 Chilled & Water Fan Coil24,000 – 60,000 BTUHPhysical Dimensions (in)Model Number A B C D E24CWA4 17.50 21.00 39.75 12.50 16.0036CWA4 17.50 21.00 39.75 12.50 16.0048CWA4 21.50 25.00 49.75 17.25 19.5060CWA4 21.50 25.00 49.75 17.25 19.50EFigure 2DCBA273

INSTALLATION & OPERATINGMANUALCWA4 Chilled & Hot Water Fan Coil24,000 – 60,000 BTUH-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORINSTALLING FAN COILThe CWA4 is a chilled and hotwater fan coil designed for multipositionapplications in closets,attics or basements. They are fieldconvertible to horizontalapplications without the need foradditional parts. Unit is not suitablefor down flow applications.Fiqure 3Figure 3 & 4CONVERTING FAN COILTO RIGHT HANDDISCHARGEThe CWA4 fan coil comes shippedfrom the factory assembled with aleft hand air dischargeconfiguration.Figure 41. To convert the fan coil to righthand discharge remove the threefront panels.2. Remove the three screws fromthe coil mounting brackets and pullentire coil assembly out of the fancoil.Figure 5Figure 5274

INSTALLATION & OPERATINGMANUALCWA4 Chilled & Hot Water Fan Coil24,000 – 60,000 BTUH3. Remove the horizontal drain panfrom the coil and re-install it on theother side.Figure 64. Ensure the coil mounting bracketsare secure in order to avoid coilmisplacement inside the cabinet.Check coil slope to make sure thatthe drain pan slopes toward the drainoutlet. An incorrectly installed coilcould result in damages to the fancoil and property.Figure 6UP FLOW5. Re-install the three front panelspreviously removed in step one.6. The unit shall be suitable for 0”clearance to combustible materials.Sufficient clearance must be providedat the front of the fan coil to allowaccess for maintenance and servicing.7. The fan coil comes with oneprimary and one secondarycondensate drain connection perconfiguration. Ensure whenconnecting the field installedcondensate drain lines, the lower ofthe two fan coil drain connections ispiped into the buildings condensateremoval method.Figure 7 & 8SECONDARYDRAINPRIMARYDRAINSECONDARYDRAINPRIMARYDRAINFigure 7HORIZONTAL FLOWFigure 8275

INSTALLATION & OPERATINGMANUALCWA4 Chilled & Hot Water Fan Coil24,000 – 60,000 BTUHTemperatureSensors8. The hot water coil is a horizontallymounted coil in the top of the fancoil. The hot water inlet is on theright and the outlet on the left. Thereare two temperature sensors on top ofthe hot water coil.Figure 99. The CWA4 comes equipped with acirculating pump, coil drain valve,manual air purge fitting and coiltemperature sensors.Figure 1010. Make sure when attachingductwork to the fan coil that screwsor other objects do not damage thehot water coil. If the coil fins becomebent or flattened, ensure that they arestraightened so the air flow of the fancoil is not affected.Figure 11OutletCoil DrainValveInletFigure 9PumpFigure 10Coil FinsFigure 11276

INSTALLATION & OPERATINGMANUALCWA4 Chilled & Hot Water Fan Coil24,000 – 60,000 BTUH11. All duct work must be installed perlocal and national codes. The return airduct and the return air openingprovided in the fan coil must have thesame area.AELECTRICALFigure 12 & 13All wiring must comply with local andnational codes. High and low voltagetermination points are provided.Knockouts are provided in the cabinetfor field wiring of the electrical.CONTROLSA 24 vac transformer, fan relay, pumprelay and time delay relay are providedinside cabinet. All supplied controls arewired to respective terminations.BFigure 12CWA4 Inlet AirDimensionsAB24CWA4 15 17.536CWA4 15 17.548CWA4 19.25 22.2560CWA4 19.25 22.25Figure 13Figure 14Time DelayRelayFan RelayPump RelayTransformer277

INSTALLATION & OPERATINGMANUALCWA4 Chilled & Hot Water Fan Coil24,000 – 60,000 BTUHPIPING12. This fan coil is supplied with onechilled water coil and one hot watercoil. Each coil has one dedicated inletand outlet. Ensure that both lines areinsulated according to local andnational building codes.Figure 15OUTLETINLET13. Condensate drains must be installedwith at least .25” of slope per foot awayfrom the fan coil. Since the drain pan islocated on the suction side of theblower a minimum trap of 1.5” must beinstalled in the drain line for properdrainage.INLETOUTLETROUTINE CHECK UP ANDSERVICEFigure 15This product is designed to providemany years of dependable, trouble freecomfort when properly maintained.Proper maintenance will consist ofroutine filter cleanings/changes, biannualcheck ups that include but notlimited to filter inspections, electricheater inspections /cleaning of theinternal electrical and heat transfercomponents by a qualified servicetechnician. Failure to provide periodiccheck ups and cleaning can result inexcessive operating cost and/orequipment failure.278

CWA4 Wiring Diagram120-1-60279

CWA4 CERTIFIED DRAWING280

MHCCX DX Ceiling ConcealedWith or Without Electric HeatDirect Expansion Fan Coil 12,000 - 36,000 BTUH281

MHCCX NOMENCLATURE BREAKDOWNDirect Expansion Concealed Fan Coil with Electric HeatDirect Expansionw/ Electric HeatMHCCX XX - XX - XXNominal Tons04 = 1 TON06 = 1.5 TON08 = 2 TON10 = 2.5 TON12 = 3 TONElectric Heat00= 0 KW02 =2KW "See Note 2 & 3"03= 3 KW05= 5 KW06= 6 KW08= 8 KWNotes:1. The standard unit is 208/230-1-50/60 vac. Add suffix 03 for 120-1-50/60 vac units.2. 120 vac units are available without electric heat or 2kw of electric heat.3. 2 KW electric heat is only available with 120 vac.Voltage "See Notes"01= 208/230-1-50/6003=120-1-60Available Model NumbersMHCCX04-00-03 MHCCX06-00-03 MHCCX08-00-03 MHCCX10-00-03 MHCCX12-00-03MHCCX04-02-03 MHCCX06-02-03 MHCCX08-02-03 MHCCX10-02-03 MHCCX12-02-03MHCCX04-00MHCCX04-03MHCCX04-05MHCCX06-00MHCCX06-03MHCCX06-05MHCCX08-00MHCCX08-03MHCCX08-05MHCCX10-00MHCCX10-03MHCCX10-05MHCCX12-00MHCCX12-03MHCCX12-05MHCCX04-06 MHCCX06-06 MHCCX08-06 MHCCX10-06 MHCCX12-06MHCCX04-08 MHCCX06-08 MHCCX08-08 MHCCX10-08 MHCCX12-08282

HVAC Guide SpecificationsDirect Expansion Fan Coil with Electric HeatNominal Size:12,000 – 36,000 BTUHMultiaqua Model Number:MHCCX04MHCCX06MHCCX08MHCCX10MHCCX12Part 1-General1.01 System DescriptionMultiaqua Direct Expansion Fan Coils are manufactured with heavy gauge galvanized steel to resist corrosion.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested direct expansion fan coil with or without electricheat.2. Shall be assembled with heavy gauge galvanized steel.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.D. Blower Wheels:1. Blower wheels are forward curved and dynamically balanced.E. DX Coil:1. Manufactured with 3/8” rifled copper tubing mechanically bonded to aluminum fins.2. Contain a thermal expansion valve.3. Coils shall be factory tested to 350 psig.4. Coils shall be capable of being field converted from right to left hand connection.F. Drain Pan:1. All drain pans shall be coated on both the interior and exterior with baked polyester powder toresist corrosion.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a left and right hand primary sloped drain connection as well as a right handsloped secondary drain connection.283

G. Electric Heat:1. Electric Heaters shall be of the rod and disk type.2. Shall be protected by safeties.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. All components shall be wired to an internal terminal block to allow for a field installed thermostat and orFan speed control.C. Controls shall include the following components.1. 24vac transformer.2. Fan relays.3. Electric heat sequencer (s).4. Optional Thermostats.3.02 SafetiesA. Fan coil shall be equipped with all necessary components in conjunction with thecontrol system to provide the following protectants.1. High temperature.2. Over current protection.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Primary electrical power supply shall enter the unit at a single location.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.D. Control and high voltage points shall be accessed through terminal block.E. Shall be available without electric heat in 120 vac.F. Shall be available with 2 KW electric heat in 120 vac.Part 5- Accessories:5.01 EnclosuresA. Fan coils shall be capable of incorporating enclosures.1. Enclosures shall be internally insulated to insure quite operation and increase efficiency.2. Shall include knockouts for ease of piping and electrical in and out of the enclosures.3. Shall include an optional return air cutout in the enclosure.4. Shall include a supply air duct flange.5. Shall incorporate baked polyester powder service access panels with and without a filtered louver.284

ModelNumberHeight(in)MHCCX Product SpecificationsWidth(in)Depth(in)Physical DataWeight(lbs)CoilRowsFPICopperDiameter(in)LiquidLine(in)SuctionLine(in)MHCCX04 10.00 37.72 21.65 66.0 2-14 3/8 3/8 1/2 3/4MHCCX06 10.00 37.72 21.65 68.2 3-14 3/8 3/8 5/8 3/4MHCCX08 10.00 37.72 21.65 72.6 4-14 3/8 3/8 5/8 3/4MHCCX10 10.00 43.70 21.65 74.8 4-14 3/8 3/8 5/8 3/4MHCCX12 10.00 49.68 21.65 83.6 4-14 3/8 3/8 5/8 3/4Drain(in)Model NumberNominalCFMVoltsPhaseHertzElectrical DataElectricHeat(KW)MotorHPFull LoadAmpacityFuse or HACR CircuitBreaker Per CircuitMinimumAmpsMaximumAmpsMHCCX04-00 0 0.82 1 -MHCCX04-03 3 13.86 19.31 20MHCCX04-05 4005 1/8 22.56 31.6 35MHCCX04-06 6 26.9 37.6 40MHCCX04-08835.6 48.3 50MHCCX06-00 0 1.18 1.48 -MHCCX06-03 3 14.22 19.76 20MHCCX06-05 6005 1/8 22.92 32.05 35MHCCX06-06 6 27.27 38.05 40MHCCX06-08835.96 48.75 50MHCCX08-00 0 1.43 1.8 5MHCCX08-03 3 14.47 20.08 20MHCCX08-05 8005 1/4 23.17 32.36 35MHCCX08-06 6 27.52 38.36 40MHCCX08-08836.21 49.06 50MHCCX10-00 0 1.43 1.8 5MHCCX10-03 3 14.47 20.08 20MHCCX10-05 10005 1/4 23.17 32.36 35MHCCX10-06 6 27.52 38.36 40MHCCX10-08836.21 49.06 50MHCCX12-00 0 1.81 2.26 5MHCCX12-03 3 14.85 20.55 20MHCCX12-05 12005 1/4 23.55 32.84 35MHCCX12-06 6 27.9 38.84 40MHCCX12-08836.6 49.54 50208/230-1-50/60These specifications are subject to change without notice.285

MHCCX Product SpecificationsElectrical Data 120 vac No Electric HeatModel NumberNominalCFMVolts/Phase/HertzElectricHeat(KW)MotorHPFull LoadAmpacityFuse or HACR CircuitBreaker Per CircuitMinimumAmpsMaximumAmpsMHCCX04-00-03 400 0 1/30 0.55 .69 15MHCCX06-00-03 600 0 1/30 0.55 .69 15MHCCX08-00-03 800 0 1/30 0.55 .69 15MHCCX10-00-03 1000 0 1/8 1.80 2.25 15MHCCX12-00-03 1200120-1-600 1/4 3.00 3.75 15Electrical Data 120 vac 2 KW Electric HeatModel NumberNominalCFMVoltsPhaseHertzElectricHeat(KW)MotorHPFull LoadAmpacityFuse or HACR CircuitBreaker Per CircuitMinimumAmpsMaximumAmpsMHCCX04-02-03 400 2 KW 1/30 17.22 22 25MHCCX06-02-03 600 2 KW 1/30 17.22 22 25MHCCX08-02-03 800 2 KW 1/30 17.22 22 25MHCCX10-02-03 1000 2 KW 1/8 18.47 23 25MHCCX12-02-03 1200120-1-602 KW 1/4 19.67 24 25These specifications are subject to change without notice.286

MHCCX Cooling & Heating Performance DataPerformance DataModel NumberNominalCFMNominalCoolingBTUHElectricHeatBTUHMHCCX04-00 0MHCCX04-03 10,200MHCCX04-05 17,000MHCCX04-06 20,500MHCCX04-0827,300MHCCX06-00 0MHCCX06-03 10,200MHCCX06-05 17,000MHCCX06-06 20,500MHCCX06-0827,300MHCCX08-00 0MHCCX08-03 10,200MHCCX08-05 17,000MHCCX08-06 20,500MHCCX08-0827,300MHCCX10-00 0MHCCX10-03 10,200MHCCX10-05 17,000MHCCX10-06 20,500MHCCX10-0827,300MHCCX12-00 0MHCCX12-03 10,200MHCCX12-05 17,000MHCCX12-06 20,500MHCCX12-0827,3004006008001,0001,20012,00018,00024,00030,00036,000* Cooling based on 75 % Sensible and 25% Latent:* Fan coils are 13 SEERThese specifications are subject to change without notice.287

MHCCX CFM AdjustmentsCFM vs. External Static Pressure TableModel NumberExternal Static Pressure0.00 0.05 0.10 0.15 0.20 0.25 0.30MHCCX04 485 455 415 370 325 0 0MHCCX06 775 745 715 680 640 595 545MHCCX08 915 890 850 815 775 730 685MHCCX10 1145 1110 1075 1035 995 955 905MHCCX12 1480 1445 1405 1365 1325 1280 1235These specifications are subject to change without notice288

289

INSTALLATION & OPERATINGMANUALMHCCX Fan Coils 1- 3 Tons-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal configuration only and into anenclosure assembly. The enclosure assemblycan be ordered separately or field fabricatedby the installing contractor. See figure 2 forenclosure part numbers, dimensions andweights. See document number 030710001for enclosure assembly and installationinstructions. See figure 3 for fan coil onlydimensions.The coil hand of connection is fieldreversible. See figures 4-6 for converting thecoil hand of connection.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (LBS)MHCCX04 66.0MHCCX06 68.2MHCCX08 72.6MHCCX10 74.8MHCCX12 83.6Figure 1ENCLOSURE DIMENSIONSENCLOSURE FAN COIL(us)PART NUMBER SIZE Depth Length Height WeightMPE468 4 32.75 39.75 11.00 26MPE468 6 32.75 39.75 11.00 26MPE468 8 32.75 39.75 11.00 26MPE10 10 32.75 45.75 11.00 30MPE12 12 32.75 51.75 11.00 34Figure 2290

INSTALLATION & OPERATINGINSTRUCTIONSMHCCX Fan Coils 1- 3 TonsFAN COIL DIMENSIONSFan CoilModel NumberA B C D E FMHCCX04-XX 37.72 34.57 31.42 10.24 5.51 21.65MHCCX06-XX 37.72 34.57 31.42 10.24 5.51 21.65MHCCX08-XX 37.72 34.57 31.42 10.24 5.51 21.65MHCCX10-XX 43.70 40.55 37.40 10.24 5.51 21.65MHCCX12-XX 49.69 46.54 43.38 10.24 5.51 21.65.5”TXVDE.75” (MPT)CondensateDrain Connection(Both Ends)1”FCBAMounting NotchesDrain PanFigure 3291

INSTALLATION & OPERATINGMANUALMHCCX Fan Coils 1- 3 Tons-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORCONVERTING COILHAND OF CONNECTION& ELECTRIC HEATERACCESS.Figure 41. Remove the eleven screws thatattach the top to the fan coilassembly and remove the top.This will allow you to access theelectric heaters.Figure 42. Remove the eight screws thathold the coil into the fan coilframe assembly. Four screws perside.Figure 53 Slide the coil out of the fancoil frame assembly toward thecoil supply and return lineconnections. Ensure that care istaken when removing andinserting the coil not to damagethe coil fins. Insert the coil intothe fan coil frame assembly fromthe other end and reverseprocedures 4 & 5 to reassemblethe fan coil.Figure 6Figure 5Figure 6292

INSTALLATION & OPERATINGMANUALMHCCX Fan Coils 1- 3 TonsINSTRUCTIONS FORINSTALLING FAN COILUNIT INTO ENCLOSUREASSEMBLY1. Remove the ten screws thatattach the electrical assembly tothe fan coil unit. Do not separatethe electrical assembly from theblower assembly. These twoassemblies will be removed in thenext step.Figure 7Figure 72. Remove the five screwsattaching the blower assembly tothe coil assembly. Separate theelectrical and blower assembliesfrom the coil assembly.Figure 83. Insert the coil assembly intothe enclosure assembly startingwith the discharge air opening ofthe coil first. Ensure that thedischarge of the coil is insertedinto the discharge of theenclosure completely. Failure tocompletely insert the coildischarge will result inrecirculation of the discharge air.Figure 9Figure 8Figure 9293

INSTALLATION & OPERATINGMANUALMHCCX Fan Coils 1- 3 Tons4. Align the fan coil mountingbolts up with the four mountingnotches provided in the coilassembly top. Secure the coilassembly to the enclosure withtwo mounting bolts per side.Ensure that the coil assembly islevel in both directions to allowproper drainage and operation.Figure 105. Reinstall the blower assemblyonto the coil assembly using thefive screws previously removedin step 2 figure 8.Figure 11Figure 106. Reinstall the electricalassembly onto the coil assemblyusing the ten screws previouslyremoved in step 1 figure 7.Figure 12ELECTRICAL, COIL,DRAIN AND RETURN /SUPPLY AIR LOCATIONSFigure 117. There are multiple entry pointson the factory supplied enclosureassembly for water lines,condensate lines, refrigerant linesand electrical connections. If anon-louvered service access panelis used or if an alternate return airlocation is required an optionalreturn air cutout is provided.Figure 13Figure 12294

INSTALLATION & OPERATINGMANUALMHCCX Fan Coils 1- 3 TonsELECTRICAL &CONDENSATE DRAIN8. There are four terminationpoints for the electrical wiring.There are two on each side of theelectrical box. See pages 300-304for electrical drawings. Wiringmust be installed according toprevailing codes and regulations.The fan coil unit has onecondensate drain connection oneither side of the drain pan foreither left or right hand drainconnection. The opposite drainconnection not being used must becapped off by the installingcontractor. The middle drainconnection is the safety condensatedrain connection. Ensure that allcondensate drain lines have at leastone quarter of an inch of fall perfoot for proper drainage.Figure 14DIRECT EXPANSION COILCONNECTIONS9. The fan coil unit comes with aThermal Expansion Valve installedon the DX coil. Ensure that thesuction line is insulated all the wayto the coil header and the liquid lineis insulated from the TXV to thedistributor.Entry PointsTypical Both EndsFigure 13Electrical Terminations Figure 14 PointsFigure 14Optional ReturnAir CutoutLeft and Right Hand Drain ConnectionsSafety Drain ConnectionFigure 15Figure 15295

INSTALLATION & OPERATIONMANUALMHCCX Fan Coils 1-3 TonsRETURN AND SUPPLY AIR CONNECTIONS10. When mounting the service access panel, louvered or non-louvered, the installing contractormust provide a frame in order to connect the enclosure assembly to the service access panel. This isrequired to obtain an airtight seal for the return air. Ensure that the material used for the frameadheres to national codes and / or local codes and regulations. Care must be taken when installingthe service access panel to ensure the opening of the hinged service panel.Figure 16 & 1711. Filters are not supplied with the fan coil unit or the service access panel. The filter(s) must besupplied by the installing contractor. If a louvered service access panel is used the filter will mounton the under side of the hinged access panel. If the optional return air cutout is used it isrecommended that a return air filter grille be used that has the same surface area as therecommended filter sizes.Figure 18Fan Coil Mounting BoltsTypical All Four CornersFan Coil EnclosureSupply Duct FlangeOptional Return Air CutoutFrame EnclosureSupplied ByInstalling ContractorCeilingHinged Service Access PanelLouvered Panel Shown. AnOptional Non-louvered ServiceAccess Panel Is Available.Return AirFigure 16Panel Mounting Screw ( TYP)296

INSTALLATION & OPERATIONMANUALMHCCX Fan Coils 1-3 TonsSERVICE ACCESS PANEL DIMENSIONSPanel ModelNumberLouvered & Non-LouveredFan CoilSizeA(in)B(in)C(in)MAP468L(NL) 4 43.25 27.5 1.5MAP468L(NL) 6 43.25 27.5 1.5MAP468L(NL) 8 43.25 27.5 1.5MAP10L (NL) 10 49.25 27.5 1.5MAP12L (NL) 12 55.25 27.5 1.5ABC(typ) Figure 17FAN COILMODELRECOMMENDED FILTERSIZESNUMBER Width (in) Length (in)MHCCX04 18 36MHCCX06 18 36MHCCX08 18 36MHCCX10 18 36MHCCX12 2 qty 18 24Figure 18297

INSTALLATION & OPERATIONMANUALMHCCX Fan Coils 1-3 Tons12. The fan coil enclosure assembly has a supply air duct flange to allow the attachment of ductwork.Ensure when attaching ductwork to the flange that the screws are at least one and half inches away fromthe front of the enclosure. This is to allow proper insertion of the fan coil assembly into the enclosureassembly when duct work will be installed before the fan coil is installed.Figure 19SUPPLY AIR DUCT FLANGEEnclosureModel NumberFan CoilSizeA(in)B(in)MAP468L(NL) 4 6 31.75MAP468L(NL) 6 6 31.75MAP468L(NL) 8 6 31.75MAP10L (NL) 10 6 37.75MAP12L (NL) 12 6 43.75ABFigure 19298

INSTALLATION & OPERATIONMANUALMHCCX Fan Coils 1-3 TonsMAITENANCE1. Air Filter(s):Filters are an essential part of thequality of air that is provided to theoccupants. Never operate HVACequipment without filters. Filtershelp remove dust and unwantedparticles from the air stream,helping to keep the space clean.They also keep this debris fromcollecting on the heat transfersurfaces of the unit thusmaintaining optimum equipmentefficiency and performance. Thesefilters will be located either in theunit or upstream from the unit inthe return air ductwork. Filters mustbe inspected, cleaned and/orchanged routinely. This routinemaintenance procedure will allowthe unit to continually operate asdesigned, reduce service expensesand extend equipment/componentlife.and/or replacements in the event theunit fails to operate or is beingserviced. If fuses are used, ensurethat the replacement fuses are of thesame size and type as the ones youare replacing. It is a good idea tokeep replacement fuses of theappropriate size and type on hand.3. Routine Check Up and Service:This product is designed toprovide many years of dependable,trouble free comfort when properlymaintained. Proper maintenancewill consist of routine filtercleanings/changes, bi-annual checkups that include but not limited tofilter inspections, electric heaterinspections /cleaning of the internalelectrical and heat transfercomponents by a qualified servicetechnician. Failure to provideperiodic check ups and cleaning canresult in excessive operating costand/or equipment failure.2. Fuses and/or Circuit Breakers:This unit must be connected tothe buildings electric service inaccordance with local/nationalelectrical codes and regulations.These electrical connections willinclude over current protection inthe form of fuses or circuitbreakers. Have your contractoridentify/label the circuits and thelocation of them so that you may bein a position to make inspections299

MHCCX Without Electric Heat Wiring Diagram208/230-1-50/60300

MHCCX with Electric Heat Wiring Diagram208/230-1-50/60301

MHCCX with 2KW Electric Heat Wiring Diagram120-1-50/60302

MHCCX without Electric Heat Wiring Diagram120-1-50/60303

MHCCX CERTIFIED DRAWING304

MCCX Direct ExpansionCeiling ConcealedDirect Expansion Fan Coil 48,000 - 60,000 BTUH305

MCCX NOMENCLATURE BREAKDOWNDirect Expansion Ceiling Concealed Fan CoilMCCX- XX - C -1Direct ExpansionCoolingVoltage1=208/230/-1-50/60Nominal Tons16= 4 ton20= 5 tonAvailable Model NumbersMCCX-16-C-1MCCX-20-C-1306

HVAC Guide SpecificationsDirect Expansion Fan CoilNominal Size:48,000 – 60,000 BTUHMultiaqua Model Number:MCCX16MCCX20Part 1-General1.01 System DescriptionMultiaqua Direct Expansion Fan Coils are manufactured with heavy gauge galvanized steel to resist corrosion.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested direct expansion fan coil.2. Shall be assembled with heavy gauge galvanized steel.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Shall be available in 208/230-1-50/60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.D. Blower Wheels:1. Blower wheels are forward curved and dynamically balanced.E. DX Coil:1. Manufactured with 3/8” copper rifled tubing mechanically bonded to aluminum fins.2. Contain a thermal expansion valve.3. Coils shall be factory tested to 350 psig.4. Coils shall be capable of being field converted from right to left hand connection.F. Drain Pan:1. All drain pans shall be coated on both the interior and exterior with baked polyester powder toresist corrosion.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a left and right hand primary sloped drain connection as well as a sloped righthand secondary drain connection.307

Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. All components shall be wired to an internal terminal block to allow for a field installed thermostat and orfan speed control.C. Controls shall include the following components.1. 24vac transformer.2. Fan relays.3. Optional thermostats.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Primary electrical power supply shall enter the unit at a single location.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.D. Control and high voltage points shall be accessed through terminal block.308

MCCX Product Specifications & CapacityModelNumberHeight(in)Width(in)Depth(in)Weight(lbs)Physical DataCoilRowsFPICopperDiameter(in)LiquidLine(in)SuctionLine(in)MCCX16 13.78 48.50 20.00 68.34 3-14 3/8 3/8 3/4 1/2MCCX20 13.78 56.10 20.00 72.80 3-14 3/8 3/8 3/4 1/2Drain(in)Electrical DataModel NumberNominalCFMVolts/ Phase/HertzMotorHPFull LoadAmpacityFuse or HACRCircuit Breaker PerCircuitMinimumAmpsMaximumAmpsMCCX-16-C-1 1600 208/230-1-50/60 1/2 2.72 3.40 7MCCX-20-C-1 2000 208/230-1-50/60 1/2 2.72 3.40 7Performance DataModel NumberNominalCFMCoolingCapacityMCCX-16-C-1 1600 48,000MCCW-20-C-1 2000 58,000Nominal CFM vs. External Static Pressure TableModelHi SpeedNumber 0.05 0.10 0.15 0.20 0.25 0.30MCCX-16 1435 1420 1390 1355 1316 1281MCCX-20 1435 1415 1400 1363 1325 1290These specifications are subject to change without notice.309

310

INSTALLATION & OPERATINGMANUALMCCX Fan Coils 4 & 5 Tons-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal configuration only. See figure 2for fan coil dimensions.The coil hand of connection is fieldreversible. See figures 4-6 for converting thecoil hand of connection.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (LBS)MCCX16 68.34MCCX20 72.80Figure 1311

INSTALLATION & OPERATINGINSTRUCTIONSMCCX Fan Coils 4 & 5 TonsFAN COIL DIMENSIONS (in)Fan CoilModel Number A B C D E FMCCX16 48.39 43.86 42.20 13.74 9.49 19.80MCCX20 56.38 51.85 42.20 13.74 9.49 19.80.5”TXVDE.75” (MPT)CondensateDrain Connection(Both Ends)1”FCBAMounting NotchesDrain PanFigure 2312

INSTALLATION & OPERATINGMANUALMCCX Fan Coils 4 & 5 Tons-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORCONVERTING COILHAND OF CONNECTIONFigure 31. Remove the eleven screws thatattach the top to the fan coilassembly and remove the top.This will allow you to access theelectric heaters.Figure 32. Remove the eight screws thathold the coil into the fan coilframe assembly. Four screws perside.Figure 43 Slide the coil out of the fancoil frame assembly toward thecoil supply and return lineconnections. Ensure that care istaken when removing andinserting the coil not to damagethe coil fins. Insert the coil intothe fan coil frame assembly fromthe other end and reverseprocedures 3 & 4 to reassemblethe fan coil.Figure 5Figure 4Figure 5313

INSTALLATION & OPERATINGMANUALMCCX Fan Coils 4 & 5 TonsELECTRICAL &CONDENSATE DRAIN4. There are four terminationpoints for the electrical wiring.There are two on each side of theelectrical box. See page 316 forelectrical drawing. Wiring must beinstalled according to prevailingcodes and regulations.The fan coil unit has onecondensate drain connection oneither side of the drain pan foreither left or right hand drainconnection. The opposite drainconnection not being used must becapped off by the installingcontractor. The middle drainconnection is the safety condensatedrain connection. Ensure that allcondensate drain lines have at leastone quarter of an inch of fall perfoot for proper drainage.Figure 6DIRECT EXPANSION COILCONNECTIONS5. The fan coil unit comes with aThermal Expansion Valve installedon the DX coil. Ensure that thesuction line is insulated all the wayto the coil header and the liquid lineis insulated from the TXV to thedistributor.Left and Right Hand Drain ConnectionsElectrical Terminations Figure 14 PointsSafety Drain ConnectionFigure 6Figure 7Figure 7314

INSTALLATION & OPERATIONMANUALMCCX Fan Coils 4 & 5 TonsMAITENANCE1. Air Filter(s):Filters are an essential part of thequality of air that is provided to theoccupants. Never operate HVACequipment without filters. Filtershelp remove dust and unwantedparticles from the air stream,helping to keep the space clean.They also keep this debris fromcollecting on the heat transfersurfaces of the unit thusmaintaining optimum equipmentefficiency and performance. Thesefilters will be located either in theunit or upstream from the unit inthe return air ductwork. Filters mustbe inspected, cleaned and/orchanged routinely. This routinemaintenance procedure will allowthe unit to continually operate asdesigned, reduce service expensesand extend equipment/componentlife.and/or replacements in the event theunit fails to operate or is beingserviced. If fuses are used, ensurethat the replacement fuses are of thesame size and type as the ones youare replacing. It is a good idea tokeep replacement fuses of theappropriate size and type on hand.3. Routine Check Up and Service:This product is designed toprovide many years of dependable,trouble free comfort when properlymaintained. Proper maintenancewill consist of routine filtercleanings/changes, bi-annual checkups that include but not limited tofilter inspections, electric heaterinspections /cleaning of the internalelectrical and heat transfercomponents by a qualified servicetechnician. Failure to provideperiodic check ups and cleaning canresult in excessive operating costand/or equipment failure.2. Fuses and/or Circuit Breakers:This unit must be connected tothe buildings electric service inaccordance with local/nationalelectrical codes and regulations.These electrical connections willinclude over current protection inthe form of fuses or circuitbreakers. Have your contractoridentify/label the circuits and thelocation of them so that you may bein a position to make inspections315

MHCCX Without Electric Heat Wiring Diagram208/230-1-50/60316

MCCX CERTIFIED DRAWING317

MHNCCX DX with Hot Water HeatCeiling Concealed4-Pipe Heat / Cool Fan Coil 12,000 - 36,000 BTUH318

MHNCCX NOMENCLATURE BREAKDOWN4-Pipe Heat/Cool Ceiling Concealed Fan CoilMHNCCW- XX - XXCeiling Concealed4-Pipe DX Cool/HW HeatVoltage01= 208/230-1-50/6003= 120-1-50/60Nominal Tons04 = 1 Ton06 = 1.5 Ton08 = 2 Ton10 = 2.5 Ton12 = 3 TonAvailable Model NumbersMHNCCX-04-01MHNCCX-06-01MHNCCX-08-01MHNCCX-10-01MHNCCX-12-01MHNCCX-04-03MHNCCX-06-03MHNCCX-08-03MHNCCX-10-03MHNCCX-12-03319

HVAC Guide SpecificationsDirect Expansion and Hot Water Fan Coil4-PipeNominal Size:12,000 – 36,000 BTUHMultiaqua Model Number:MHNCCX04MHNCCX06MHNCCX08MHNCCX10MHNCCX12Part 1-General1.01 System DescriptionMultiaqua DX and Chilled Water Fan Coils are manufactured with heavy gauge galvanized steel to resistcorrosion.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested DX and hot water fan coil.2. Shall be assembled with heavy gauge galvanized steel.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of heavy gauge galvanized steel casing with a baked polyester powder.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Shall be available in 115-1-50/60 and 208/230-1-50/60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.D. Blower Wheels:1. Blower wheels are forward curved and dynamically balanced.E. Water Coil:1. Manufactured with water coils containing 3/8” copper tubing mechanically bonded to aluminumfins.2. Contain both a manual water drain and manual air bleed port per coil.3. Coils shall be factory tested to 350 psig.4. Coils shall be capable of being field converted from right to left hand connection.F. Direct Expansion Coil:1. Manufactured with water coils containing 3/8” copper tubing mechanically bonded to aluminumfins.2. Will contain a thermal expansion valve.3. Coils shall be tested to 350 psig.4. Coils shall be capable of being field converted from right to left hand connection.320

G. Drain Pan:a. All drain pans shall be coated on both the interior and exterior with baked polyester powder toresist corrosion.b. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.c. Pans shall contain a left and right hand primary sloped drain connection as well as a sloped righthand secondary drain connection.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. All components shall be wired to an internal terminal block to allow for a field installed thermostat and orfan speed control.C. Controls shall include the following components.1. 24vac transformer.2. Fan relays.3. Optional thermostats.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Primary electrical power supply shall enter the unit at a single location.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.D. Control and high voltage points shall be accessed through terminal block.Part 5- Accessories:5.01 EnclosuresA. Fan coils shall be capable of incorporating enclosures.1. Enclosures shall be internally insulated to insure quite operation and increase efficiency.2. Shall include knockouts for ease of piping/ electrical in and out of the enclosures.3. Shall include an optional return air cutout in the enclosure.4. Shall include a supply air duct flange.5. Shall incorporate baked polyester powder service access panels with and without a filter louver.321

MHNCCX Product SpecificationsPhysical DataModel NumberHeight(in)Length(in)Depth(in)Weight(lbs)DXRowsFPIH/WRowsFPICopperDiameter(in)LiquidLine(in)SuctionLine(in)WaterInlet(in)WaterOutlet(in)Drain(in)MHNCCX04-01(03) 10 37.72 21.65 66.0 2-14 2-14 3/8 3/8 1/2 5/8 5/8 3/4MHNCCX06-01(03) 10 37.72 21.65 68.2 3-14 2-14 3/8 3/8 5/8 5/8 5/8 3/4MHNCCX08-01(03) 10 37.72 21.65 72.6 4-14 2-14 3/8 3/8 5/8 5/8 5/8 3/4MHNCCX10-01(03) 10 43.7 21.65 74.8 4-14 2-14 3/8 3/8 5/8 7/8 7/8 3/4MHNCCX12-01(03) 10 49.68 21.65 83.6 4-14 2-14 3/8 3/8 5/8 7/8 7/8 3/4Model NumberNominalCFMElectrical DataVolts/ Phase/HertzMotorHPFull LoadAmpacityFuse or HACRCircuit BreakerPer CircuitMinimumAmpsMaximumAmpsMHNCCX04-01 208/230-1-50/60 1/8 0.82 1.03 2400MHNCCX04-03120-1-60 1/30 0.55 .69 2MHNCCX06-01 208/230-1-50/60 1/8 1.18 1.48 3600MHNCCX06-03120-1-60 1/30 0.55 .69 2MHNCCX08-01 208/230-1-50/60 1/4 1.43 1.79 4800MHNCCX08-03120-1-60 1/30 0.55 .69 2MHNCCX10-01 208/230-1-50/60 1/4 1.63 2.04 41000MHNCCX10-03120-1-60 1/8 1.80 2.25 4MHNCCX12-01 208/230-1-50/60 1/4 1.81 2.26 41200MHNCCX12-03120-1-60 1/4 3.00 3.75 7These specifications are subject to change without notice.322

MHCCX DX Cooling Performance Data,CFM vs. ESP and Glycol AdjustmentModelNumberNominalCFMNominalCoolingBTUHMHNCCX04-01 400 12,000MHNCCX04-03 400 12,000MHNCCX06-01 600 18,000MHNCCX06-03 600 18,000MHNCCX08-01 800 24,000MHNCCX08-03 800 24,000MHNCCX10-01 1,000 30,000MHNCCX10-03 1,000 30,000MHNCCX12-01 1,200 36,000MHNCCX12-01 1,200 36,000* Cooling based on 75 % Sensible and 25% Latent:* Fan coils are 13 SEERCFM vs. External Static Pressure TableModel NumberExternal Static Pressure0.05 0.10 0.15 0.20 0.25 0.30MHNCCX04 397 373 340 320 0 0MHNCCX06 634 608 578 544 506 463MHNCCX08 757 723 700 659 621 582MHNCCX10 943 914 880 846 812 769MHNCCX12 1228 1194 1160 1126 1088 1050Propylene Glycol/GPM Adjustment FactorsCapacityAmbient Propylene GPM AdjustmentReductionTemp Glycol %= 100% Capacity26° F 10% x 0.99 x 1.0120° F 20% x 0.98 x 1.038° F 30% x 0.98 x 1.07-5° F 40% x 0.97 x 1.11-28° F 50% x 0.96 x 1.16These specifications are subject to change without notice.323

MHNCCX Heating Capacity Adjustment FactorsHOT WATER CAPACITY CORRECTION FACTORSMODEL # MHNCCX04 MHNCCX06 MHNCCX08 MHNCCX10 MHNCCX12CFM TC SC TC SC TC SC TC SC TC SC320 0.88 0.86350 0.90 0.89375 0.94 0.93400 1.00 1.00425460500 0.93 0.92525 0.95 0.94550 0.98 0.97580 1.01 1.02 0.91 0.90600 1.02 1.03 0.92 0.93630 1.03 1.04 0.94 0.94650 0.96 0.97675 0.98 0.99700 0.99 0.99750 1.00 1.00 0.93 0.92775 0.95 0.93800 0.96 0.95850 0.97 0.96900 0.99 0.98950 1.00 1.00100010251050 0.93 0.931100 0.96 0.951125 0.97 0.961150 0.99 0.981200 1.01 1.021225 1.03 1.04These specifications are subject to change without notice.324

MHNCCX Hot Water Performance DataENTERINGAIR (°F)NOMINALCFM50 400MHNCCX-04 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.0 1.0 11.2 13.8 16.4 19.0 21.6 24.2 26.8 29.4 32.0 34.6 37.22.0 3.4 13.4 16.0 18.6 21.2 23.8 26.4 29.0 31.6 34.2 36.8 39.43.0 7.0 14.8 17.4 20.0 22.6 25.2 27.8 30.4 33.0 35.6 38.2 40.8ENTERINGAIR (°F)NOMINALCFM60 400MHNCCX-04 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.0 1.0 8.4 11.0 13.6 16.2 18.8 21.4 24.0 26.7 29.4 32.1 34.82.0 3.4 10.6 13.3 16.0 18.7 21.4 24.1 26.8 29.5 32.2 34.9 37.63.0 7.0 12.0 14.7 17.4 20.1 22.8 25.5 28.2 30.9 33.6 36.3 39.0ENTERINGAIR (°F)NOMINALCFM70 400MHNCCX-04 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.0 1.0 5.8 8.4 11.0 13.6 15.5 18.1 20.0 22.6 24.5 27.1 29.72.0 3.4 7.9 10.6 13.4 16.1 18.9 21.6 24.4 27.1 29.9 32.6 35.33.0 7.0 8.8 11.6 14.4 17.3 20.2 23.0 26.1 28.9 32.0 34.9 37.8ENTERINGAIR (°F)NOMINALCFM80 400MHNCCX-04 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°1.0 1.0 8.4 5.8 8.4 11.0 12.9 15.5 17.4 20.0 21.9 24.5 27.12.0 3.4 10.5 8.0 10.8 13.5 16.3 19.0 21.8 24.5 27.3 30.0 32.73.0 7.0 12.1 9.0 11.8 14.7 17.6 20.4 23.5 26.3 29.4 32.3 35.2These specifications are subject to change without notice.325


MHNCCX Hot Water Performance DataENTERINGAIR (°F)NOMINALCFM50 800MHNCCX-08 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.0 0.5 16.8 20.5 24.1 27.7 31.4 35.0 39.0 42.4 46.5 49.7 53.33.0 1.1 19.2 22.8 26.4 30.0 34.7 37.2 43.2 48.0 51.6 55.2 58.84.0 1.9 20.5 24.2 27.9 31.6 36.7 39.0 45.7 50.1 54.7 57.5 61.2ENTERINGAIR (°F)NOMINALCFM60 800MHNCCX-08 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.0 0.5 13.5 17.2 20.9 24.6 28.2 32.0 35.8 39.4 43.3 46.8 50.53.0 1.1 15.8 19.5 23.2 26.9 31.5 .34.3 40.0 41.9 48.4 52.8 56.54.0 1.9 17.3 21.0 24.7 28.4 33.5 35.8 42.5 46.9 51.5 54.3 58.0ENTERINGAIR (°F)NOMINALCFM70 800MHNCCX-08 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.0 0.5 10.5 14.1 17.7 21.3 25.0 28.5 32.6 35.7 40.1 42.9 46.53.0 1.1 12.6 16.3 20.0 23.7 28.3 34.8 36.8 42.2 45.2 49.6 53.34.0 1.9 14.1 17.8 21.5 25.2 30.3 32.6 39.3 43.7 48.3 51.1 54.8ENTERINGAIR (°F)NOMINALCFM80 800MHNCCX-08 HEATING CAPACITIESENTERING WATER TEMPERATURE (°F)GPM WPD100° 110° 120° 130° 140° 150° 160° 170° 180° 190° 200°2.0 0.5 7.1 10.8 14.5 18.2 21.8 25.6 29.4 33.0 36.9 40.4 44.13.0 1.1 9.4 13.1 16.8 20.5 25.1 27.9 33.6 35.3 42.0 46.4 50.14.0 1.9 10.9 14.6 18.3 22.0 27.1 33.1 36.1 40.5 45.1 47.9 51.6These specifications are subject to change without notice.327



330

INSTALLATION & OPERATINGMANUALMHNCCX Fan Coils 1- 3 Tons-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and / or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal configuration only and into anenclosure assembly. The enclosure assemblycan be ordered separately or field fabricatedby the installing contractor. See figure 2 forenclosure part numbers, dimensions andweights. See document number 030710001for enclosure assembly and installationinstructions. See figure 3 for fan coil onlydimensions.The coil hand of connection is fieldreversible. See figures 4-6 for converting thecoil hand of connection.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (LBS)MHNCCX04 66.0MHNCCX06 68.2MHNCCX08 72.6MHNCCX10 74.8MHNCCX12 83.6ENCLOSUREFAN COILPART NUMBERSIZEFigure 1ENCLOSURE DIMENSIONS(us)Depth Length Height WeightMPE468 4 32.75 39.75 11.00 26MPE468 6 32.75 39.75 11.00 26MPE468 8 32.75 39.75 11.00 26MPE10 10 32.75 45.75 11.00 30MPE12 12 32.75 51.75 11.00 34Figure 2331

INSTALLATION & OPERATINGINSTRUCTIONSMHNCCX Fan Coils 1- 3 TonsFAN COIL DIMENSIONSFan CoilModel NumberA B C D E FMHNCCX04 37.72 34.56 31.41 10.00 5.51 21.65MHNCCX06 37.72 34.56 31.41 10.00 5.51 21.65MHNCCX08 37.72 34.56 31.41 10.00 5.51 21.65MHNCCX10 43.70 40.55 37.40 10.00 5.51 21.65MHNCCX12 49.68 46.53 43.38 10.00 5.51 21.65.5”Air VentHot Water SupplyHot Water ReturnDETXV & LiquidLineCoil DrainSuction LineB1”F.75” (MPT)CondensateDrain Connection(Both Ends)CMounting NotchesADrain PanFigure 3332

INSTALLATION & OPERATINGMANUALMHNCCX Fan Coils 1- 3 Tons-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORCONVERTING COILHAND OF CONNECTIONFigure 41. Remove the eleven screws thatattach the top to the fan coilassembly and remove the top.Figure 42. Remove the sixteen screwsthat hold the coils into the fan coilframe assembly. Four screws pereach side of the coils.Figure 53 Slide the coils out of the fancoil frame assembly toward thecoil headers. Ensure that care istaken when removing andinserting the coils not to damagethe coil fins. Insert the coils intothe fan coil frame assembly fromthe other end and reverseprocedures 4 & 5 to reassemblethe fan coil.Figure 6Figure 5Figure 6333

INSTALLATION & OPERATINGMANUALMHNCCX Fan Coils 1- 3 TonsINSTRUCTIONS FORINSTALLING FAN COILUNIT INTO ENCLOSUREASSEMBLY1. Remove the ten screws thatattach the electrical assembly tothe fan coil unit. Do not separatethe electrical assembly from theblower assembly. These twoassemblies will be removed in thenext step.Figure 7Figure 72. Remove the five screwsattaching the blower assembly tothe coil assembly. Separate theelectrical and blower assembliesfrom the coil assembly.Figure 83. Insert the coil assembly intothe enclosure assembly startingwith the discharge air opening ofthe coil first. Ensure that thedischarge of the coil is insertedinto the discharge of theenclosure completely. Failure tocompletely insert the coildischarge will result inrecirculation of the discharge air.Figure 9Figure 8Figure 9334

INSTALLATION & OPERATINGMANUALMHNCCX Fan Coils 1- 3 Tons4. Align the fan coil mountingbolts up with the four mountingnotches provided in the coilassembly top. Secure the coilassembly to the enclosure withtwo mounting bolts per side.Ensure that the coil assembly islevel in both directions to allowproper drainage and operation.Figure 105. Reinstall the blower assemblyonto the coil assembly using thefive screws previously removedin step 2 figure 8.Figure 11Figure 106. Reinstall the electricalassembly onto the coil assemblyusing the ten screws previouslyremoved in step 1 figure 7.Figure 12ELECTRICAL, COIL,DRAIN AND RETURN /SUPPLY AIR LOCATIONSFigure 117. There are multiple entry pointson the factory supplied enclosureassembly for water lines,condensate lines, refrigerant linesand electrical connections. If anon-louvered service access panelis used or if an alternate return airlocation is required an optionalreturn air cutout is provided.Figure 13Figure 12335

INSTALLATION & OPERATINGMANUALMHNCCX Fan Coils 1- 3 TonsELECTRICAL &CONDENSATE DRAIN8. There are four terminationpoints for the electrical wiring.There are two on each side of theelectrical box. See pages 341 & 342for electrical drawings. Wiringmust be installed according toprevailing codes and regulations.The fan coil unit has onecondensate drain connection oneither side of the drain pan foreither left or right hand drainconnection. The opposite drainconnection not being used must becapped off by the installingcontractor. The middle drainconnection is the safety condensatedrain connection. Ensure that allcondensate drain lines have at leastone quarter of an inch of fall perfoot for proper drainage.Figure 14COIL CONNECTIONS9. The fan coil unit comes with amanual air bleed and a manual coildrain fitting on the hot water coil.The water supply line is to beconnected to the coil connectionfurthest away from the fans. Thewater return line is connected to thecoil connection closest to the fans.The DX coil comes with a factoryinstalled TXV. Ensure that thesupply / return lines on the watercoil, the DX suction line and theDX liquid line after the TXV areinsulated per code.Figure 15Entry PointsTypical Both EndsManual Coil DrainSuction LineFigure 13Electrical Terminations Figure 14 PointsFigure 14Optional ReturnAir CutoutLeft and Right Hand Drain ConnectionsManual Coil Air BleedFigure 15Figure 15Safety Drain ConnectionWater SupplyWater ReturnLiquid Line & TXV336

INSTALLATION & OPERATIONMANUALMHNCCX Fan Coils 1-3 TonsRETURN AND SUPPLY AIR CONNECTIONS10. When mounting the service access panel, louvered or non-louvered, the installing contractormust provide a frame in order to connect the enclosure assembly to the service access panel. This isrequired to obtain an airtight seal for the return air. Ensure that the material used for the frameadheres to national codes and / or local codes and regulations. Care must be taken when installingthe service access panel to ensure the opening of the hinged service panel.Figure 16 & 1711. Filters are not supplied with the fan coil unit or the service access panel. The filter(s) must besupplied by the installing contractor. If a louvered service access panel is used the filter will mounton the under side of the hinged access panel. If the optional return air cutout is used it isrecommended that a return air filter grille be used that has the same surface area as therecommended filter sizes.Figure 18Fan Coil Mounting BoltsTypical All Four CornersFan Coil EnclosureSupply Duct FlangeOptional Return Air CutoutFrame EnclosureSupplied ByInstalling ContractorCeilingHinged Service Access PanelLouvered Panel ShownReturn AirFigure 16Panel Mounting Screw ( TYP)337

INSTALLATION & OPERATIONMANUALMHNCCX Fan Coils 1-3 TonsSERVICE ACCESS PANEL DIMENSIONSLouvered & Non-LouveredFanA B CCoil(in) (in) (in)Panel Model Number SizeMAP468L (NL) 4 43.25 27.5 1.5MAP468L (NL) 6 43.25 27.5 1.5MAP468L (NL) 8 43.25 27.5 1.5MAP10L (NL) 10 49.25 27.5 1.5MAP12L (NL) 12 55.25 27.5 1.5ABC(typ) Figure 17FAN COILMODELRECOMMENDED FILTERSIZESNUMBER Width (in) Length (in)MHNCCX04 18 36MHNCCX06 18 36MHNCCX08 18 36MHNCCX10 18 36MHNCCX12 2 qty 18 24Figure 18338

INSTALLATION & OPERATIONMANUALMHNCCX Fan Coils 1-3 Tons12. The fan coil enclosure assembly has a supply air duct flange to allow the attachment of ductwork.Ensure when attaching ductwork to the flange that the screws are at least one and half inches away fromthe front of the enclosure. This is to allow proper insertion of the fan coil assembly into the enclosureassembly when duct work will be installed before the fan coil is installed.Figure 19SUPPLY AIR DUCT FLANGEFanAEnclosure Model Number Coil(in)SizeB(in)MAP468L(NL) 4 6 31.75MAP468L(NL) 6 6 31.75MAP468L(NL) 8 6 31.75MAP10L (NL) 10 6 37.75MAP12L (NL) 12 6 43.75ABFigure 19339

INSTALLATION & OPERATIONMANUALMHNCCX Fan Coils 1-3 TonsMAITENANCE1. Air Filter(s):Filters are an essential part of thequality of air that is provided to theoccupants. Never operate HVACequipment without filters. Filtershelp remove dust and unwantedparticles from the air stream,helping to keep the space clean.They also keep this debris fromcollecting on the heat transfersurfaces of the unit thusmaintaining optimum equipmentefficiency and performance. Thesefilters will be located either in theunit or upstream from the unit inthe return air ductwork. Filters mustbe inspected, cleaned and/orchanged routinely. This routinemaintenance procedure will allowthe unit to continually operate asdesigned, reduce service expensesand extend equipment/componentlife.and/or replacements in the event theunit fails to operate or is beingserviced. If fuses are used, ensurethat the replacement fuses are of thesame size and type as the ones youare replacing. It is a good idea tokeep replacement fuses of theappropriate size and type on hand.3. Routine Check Up and Service:This product is designed toprovide many years of dependable,trouble free comfort when properlymaintained. Proper maintenancewill consist of routine filtercleanings/changes, bi-annual checkups that include but not limited tofilter inspections, inspections/cleaning of the internal electricaland heat transfer components by aqualified service technician. Failureto provide periodic check ups andcleaning can result in excessiveoperating cost and/or equipmentfailure.2. Fuses and/or Circuit Breakers:This unit must be connected tothe buildings electric service inaccordance with local/nationalelectrical codes and regulations.These electrical connections willinclude over current protection inthe form of fuses or circuitbreakers. Have your contractoridentify/label the circuits and thelocation of them so that you may bein a position to make inspections340

MHNCCX-xx-01 Wiring Diagram208/230/-1-50/60341

MHNCCX-xx-03 Wiring Diagram120-1-50/60342

MHNCCX CERTIFIED DRAWING343

MHWX Direct ExpansionHi-Wall Fan CoilDirect Expansion Fan Coil 9,000 - 36,000 BTUH344

MHWX NOMENCLATURE BREAKDOWNDirect Expansion Hi-Wall Fan CoilMHWX- XX - X -1Hi-WallDirect ExpansionVoltage1=208/230/-1-50/60ModesC = DX Cooling OnlyH = DX Heat PumpNominal BTUH09=9,00012=12,00018=18,00024=24,00036=36,000Available Model NumbersMHWX-09-C-1MHWX-12-C-1MHWX-18-C-1MHWX-24-C-1MHWX-36-C-1MHWX-09-H-1MHWX-12-H-1MHWX-18-H-1MHWX-24-H-1MHWX-36-H-1345

HVAC Guide SpecificationsDirect Expansion Hi-Wall Fan CoilNominal Size:9,000 – 36,000 BTUHMultiaqua Model Number:MHWX-09MHWX-12MHWX-18MHWX-24MHWX-36Part 1-General1.01 System DescriptionMultiaqua Direct Expansion Fan Coils are manufactured with high impact molded polymers.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled direct expansion fan coil.2. Shall be assembled with high quality.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of high impact polymers.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Shall be available in 208/230-1-50/60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.4. Unit shall contain a swing motor to modulate the discharge air.D. Blower Wheels:1. Blower wheels are tangential and dynamically balanced.E. DX Coil:1. Coils manufactured with 3/8” rifled copper tubing mechanically bonded to aluminum fins.2. Coils shall be factory tested to 350 psig.F. Drain Pan:1. All drain pans shall be molded with high impact polymers.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a flexible drain tubing that is accessible from the back of the unit.346

G. Filters:1. Unit shall contain 65% washable filters.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. Shall be capable of heat pump operation.C. Controls shall include a circuit board, room sensor, indoor coil thermistor, transformer and wirelessremote.D. Controls shall be capable of incorporating an optional hard-wired thermostat.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.B. Discharge air sensor.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Unit shall incorporate a three prong male primary electrical power cord.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.347

MHWX Product Specifications & CapacityModelNumberHeight(in)Width(in)Depth(in)Physical DataCoilWeightRows(lbs)FPICopperDiameter(in)LiquidLine(in)SuctionLine(in)MHWX-09 11.70 34.60 7.10 20.00 2-20 3/8 1/4 3/8 1/2MHWX-12 12.00 39.00 7.10 22.00 2-14 3/8 1/4 3/8 1/2MHWX-18 14.20 46.10 8.10 35.60 2-16 3/8 5/16 1/2 3/4MHWX-24 14.20 46.10 8.10 37.40 3-17 3/8 3/8 5/8 3/4MHWX-36 14.40 57.10 8.50 54.00 3-18 3/8 3/8 5/8 3/4Drain(in)Electrical DataModel NumberHiSpeedCFMVolts/Phase/HertzMotorHPFull LoadAmpacityFuse or HACRCircuit Breaker PerCircuitMinimumAmpsMaximumAmpsMHWX-09-C-01 270 1/50 0.07 .09 1MHWX-12-C-01 330 1/50 0.07 .09 1208/230-1-50/60MHWX-18-C-01 480 1/20 0.15 .19 1MHWX-24-C-01 600 1/20 0.15 .19 1MHWX-36-C-01 8501/12 0.26 .33 1Performance DataModel NumberCFMNominalCoolingCapacityMHWX-09-C-1 270 9,000MHWX-12-C-1 330 12,000MHWX-18-C-1 480 18,000MHWX-24-C-1 600 24,000MHWX-36-C-1 850 36,000These specifications are subject to change without notice.348

\349

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000-36,000 BTUH-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal configuration only. See figure 2for fan coil and mounting plate dimensions.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (lbs)MHWX-09-C-1 20.00MHWX-12-C-1 22.00MHWX-18-C-1 35.60MHWX-24-C-1 37.40MHWX-36-C-1 54.00Figure 1350

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000-36,000 BTUHFan Coil ModelNumberFAN COIL AND MOUNTING PLATE DIMENSIONS (in)A B C D E F G H I JKFieldSuppliedHoleLFieldSuppliedHoleMHWX-09 34.6 11.7 7.5 7.5 3.5 2.7 1.6 0.8 1.8 0.8 2.8 2.8MHWX-12 39.0 12.0 7.5 7.5 3.6 2.7 1.5 1.1 1.7 1.0 2.8 2.8MHWX-18 46.0 14.2 3.8 3.8 6.1 2.4 2.4 1.7 2.4 1.8 2.8 2.8MHWX-24 46.0 14.2 3.8 3.8 6.1 2.4 2.4 1.7 2.4 1.8 2.8 2.8MHWX-36 57.1 14.4 4.0 4.0 6.1 2.8 1.5 1.7 1.5 1.8 2.8 2.8ACDBMounting PlateHGKEFLIJFigure 2351

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUH-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORINSTALLING THE MOUNTINGPLATEFigure 31. After a suitable place for installationhas been selected, place the mountingplate horizontally on the wall. Make surethe alignment is horizontal. Use a plumbline if available. Mark on the wall wherethe mounting holes will be drilled.Figure 32. Drill the holes for the type ofmounting hardware to be used. Checklocal building codes for correct mountinghardware. Secure the mounting plate andcheck for stiffness.Figure 43 Drill a diagonal piping access hole (2.75”) in diameter on both sides of themounting bracket. Refer to figure 2 forfield supplied hole locationsFigure 44. Check local and national codes forpiping access wall penetrations. Seefigure 5 if wall sleeves are required.Figure 5Figure 5352

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHINSTRUCTIONS FORINSTALLING FAN COILUNIT ONTO MOUNTINGPLATE1. Route the fan coil piping,electrical, condenser control wiresand/or flexible drain hose througheither of the 2.75” previouslydrilled holes in step 3 figure 4.Ensure that the piping is insulatedper local and national codes.Improper insulation could resultin voided warranty and/orbuilding damage.Figure 6Figure 62. There is a piping channel in thebottom portion of the back of theunits for crossover piping, drain,condenser control wires and/orelectrical.Figure 7Figure 73. The TXV can be installed atthe unit or condenser. Ensure thatthe liquid is insulated completelyif the TXV is installed at thecondenser.4. Figure 8 depicts (from theback of the unit) the 24 vaccondenser control wires on theleft and the 220 vac power cordon the right. These can be routedto either the right or left hand sideof the fan coil.Figure 8Figure 8353

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHINSTRUCTIONS FORINSTALLING FAN COIL UNITONTO MOUNTING PLATE4. Ensure that the drain tubing isinstalled with at least 1/4” per footof downward slope.5. Secure the fan coil to the mountingplate by first sliding the fan coil ontothe two notches provided on themounting plate.Figure 9 & 10Figure 96. Push the bottom of the fan coiltowards the wall in order to engage thelocking clips.Figure 117. Connect the refrigerant lines andpressure test lines to make sure thereare no leaks.8. Connect the condensate drain hose.Make certain that the drain has no trapsor dips in the line that would impededrainage.Figure 109. Carefully seal any wall penetrationsper local and national codes.Figure 11354

INSTALLATION & OPERATINGMANUALMHWW Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWX CONTROLS OPERATION GUIDEWireless Control: Standard Control Package (Page 355)Optional Wired Control: EG-003 (Page 361)355

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWX CONTROLS OPERATION GUIDEWireless Control:Name and function of remote controllerNote:• Be sure there are no obstructions between receiver and remote controller.• The remote control signal can be received at the distance of up to about 21 feet.• Do not throw or drop the remote controller.• Do not put any liquid in the remote controller and do not put it in direct sunlightor any place where it is very hot.• Remove batteries when the remote controller is not in use for extended periods oftime.• The remote controller should be placed 3 or more feet away from any electricappliance.LED MODE INDICATOR FOR REMOTE CONTROLLER:INDICATORLIGHTSREMOTESETTING FUNCTIONRED-GREEN COOL COOLING OPERATION ONLYRED-OFF DRY HUMIDITY CONTROL,NO FANRED-RED HEAT HEATING OPERATION ONLYRED-OFF FAN FAN OPERATION ONLYRED-BLINKING AUTO AUTO SELECTION BETWEEN HEAT & COOLDEPENDENT ON ROOM TEMP & SET TEMPRED-ORANGE ALERT FAN COIL WAITING FOR LAT TO REACH PROPERTEMPERATURE NECESSARY TO SATISFY SET POINT356

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWX CONTROLS OPERATION GUIDEFUNCTION1. TRANSMISSION SOURCE- Infra red transmission source2. POWER- Press to turn the fan coil on and off or vice versa.(Red LED left will light to indicate the control is on)3. MODE- To select desired operation mode.It will switch from one to another as shown.COOL - Cooling operation.DRY - Humidity control.HEAT - Heating operation.FAN - Fan only. No cooling or heating capability.AUTO - Operation mode will be selected automatically between HEAT andCOOL mode, depending upon the room temperature and SET temperature.4. FAN- To select fan speed. It will switch from one to another as shown below.- When the system temperature sensor is not calling for cool or heat the fan willrun at the speed previously entered in fan mode selection (high, medium or low).- If auto was the previously entered fan speed in cooling: The fan will run at lowspeed until the temperature sensor calls for either heating or cooling at whichpoint the fan will return to auto speed controlFan Speed Sequence357

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWX CONTROLS OPERATION GUIDEFUNCTION5. TEMPERATURE SETTING- Press “▲” to increase set temperature.- Press “▼” to decrease set temperature.- Press “▲” and “▼” Simultaneously to toggle between °C and °F display mode.- Temperature range: 16 C to 30°C in °C display mode and 60°F to 86°F in °Fdisplay mode.6. DELAY TIMER SETTING- The delay timer is capable of delaying both on and off functions. The delayfeature will take affect in all modes with the exception of the sleep mode. Eachtime the “▲” and “▼” is pressed it increases or decreases the On or OFF setpoint by 1 hour; up to a maximum of 18 hours.To set the OFF DELAY:With the system in operation, enter the system OFF time by pressing the “▲”button to the desired number of hours ahead that the system will be allowed torun. When the number of hours entered has elapsed the system will turn off.To set the ON DELAY:- Set the on delay by entering the desired mode of operation (fan, heat, cool andthe appropriate temperature. This will be the settings the system will followwhen operation resumes. After setting the mode and any applicabletemperature with the control, turn the remote off. Now enter the number ofhours to elapse before operation resumes by pressing the “▲” button on theremote to the desired number. When the time (in hours) entered has elapsedthe system will resume operation according to the pre-set mode andtemperature.358

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWX CONTROLS OPERATION GUIDE7. CANCEL- To cancel any setting on the delay timer.8. LOUVER- Two different functions are available:1. To set the louver stop position. There are 4 angles available. The sequence is asfollows.2. To set the louver swing (continuous motion). The sequence is as follows.9. SLEEP- This function when selected will allow the user to determine a “sleep” period. Incooling the selected temperature will rise to 1° above set point in 1/2 hour,rising to 2° in 1 hour, rising again to 4° after 2 hours of the SLEEP CYCLE.SLEEP FUNCTION DISPLAY10. DRY- This function operates to control humidity within a conditioned space. Itmeasures the difference between set point and the actual room temperature.An algorithm determines how far above set point the actual room temperature isto set point temperature and selects periods of condenser operation and low fanoperation. The greater the difference between room temperature and set pointtemperature prompts greater run time with less temperature. With lesstemperature differences, periods of fan and condenser operation are called for invarying increments as determined by the difference. In this mode (low speed) fanoperation will start 30 seconds after condenser has started and stops 30 secondsafter condenser has stopped.359

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWX CONTROLS OPERATION GUIDE11. AUTO- This function will automatically control the system switching between heating andcooling operation. If the present auto mode is cooling, a switch to heatingoperation will begin only if the actual room temperature is 7° below selectedcontrol set point. If the present auto mode is heating, a switch to cooling operationwill begin only when the room temperature is 3° above selected control set point.12. TRANSMISSION INDICATOR- Blinks twice to indicate that transmission has taken place between remote andreceiver.- Beeps indicate fan coil acknowledging receipt of transmission.TRANSMISSION INDICATOR13. HOW TO INSERT BATTERIES1. Remove the battery cover from the back of the remote2. Insert the (2) AAA batteries. Ensure that the polarity of the batteries is as showninside of the battery compartment.3. Re-attach the battery compartment cover.360

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWX CONTROLS OPERATION GUIDEOptional Wired Control: EG-003LED MODE INDICATOR FOR REMOTE CONTROLLER:INDICATOR LIGHTS SETTING FUNCTIONRED-GREEN COOL COOLING OPERATION ONLYRED-RED HEAT HEATING OPERATION ONLYRED-BLINKING AUTO AUTO SELECTION BETWEEN HEAT & COOLRED-OFF FAN FAN OPERATION ONLY1. POWER- Press to turn the fan coil on and off or vice versa.2. MODE- To select desired operation mode.It will switch from one to another as shown.COOL - Cooling operation.HEAT - Heating operation.FAN - Fan only. No cooling or heating capability.AUTO - Operation mode will be selected automatically between HEAT andCOOL mode, depending upon the room temperature and SET temperature.3. FAN- - To select fan speed. It will switch from one to another as shown below.- When the system temperature sensor is not calling for cool or heat the fan will run atthe speed previously entered in fan mode selection (high, medium or low).- If auto was the previously entered fan speed in cooling: The fan will run at low speeduntil the temperature sensor calls for either heating or cooling at which point the fanwill return to auto speed controlFan Speed Sequence361

INSTALLATION & OPERATINGMANUALMHWX Hi-Wall Fan Coils9,000 – 36,000 BTUHMHWX CONTROLS OPERATION GUIDEFUNCTION4. TEMPERATURE SETTING- Press “▲” to increase set temperature.- Press “▼” to decrease set temperature.- Press “▲” and “▼” Simultaneously to toggle between °C and °F display mode.- Temperature range: 16 C to 30°C in °C display mode and 60°F to 86°F in °Fdisplay mode.5. CANCEL- To cancel any setting on the delay timer.6. LOUVER- Two different functions are available:1. To set the louver stop position. There are 4 angles available. The sequence is as follows.2. To set the louver swing (continuous motion). The sequence is as follows.7. AUTO- This function will automatically control the system switching between heating andcooling operation. If the present auto mode is cooling, a switch to heatingoperation will begin only if the actual room temperature is 7° below selectedcontrol set point. If the present auto mode is heating, a switch to cooling operationwill begin only when the room temperature is 3° above selected control set point.362

MHWX-09-H-1 & MHWX-12-H-1 Wiring Diagram208/230/-1-50/60363

MHWX-18-H-1 Wiring Diagram208/230/-1-50/60364

MHWX-24-H-1 Wiring Diagram208/230-1-50/60365

MHWX-36-H-1 Wiring Diagram208/230-1-50/60366

MHWX-09-C-1 & MHWX-12-C-1 Wiring Diagram208/230/-1-50/60367

MHWX-18-C-1 Wiring Diagram208/230/-01-50/60368

MHWX-24-C-1 Wiring Diagram208/230/-1-50/60369

MHWX-36-C-1 Wiring Diagram208/230-1-50/60370

MHWX CERTIFIED DRAWING371

FSFCA Direct ExpansionUniversal Mount Fan CoilDirect Expansion Fan Coil 12,000 - 60,000 BTUH372

FSFCA NOMENCLATURE BREAKDOWNDirect Expansion Universal Mount Fan CoilFSFCA-XX - 1 - UUniversal MountDirect ExpansionControl Option24 vac ReadyVoltage208/230/-1-50/60Nominal Tons04 = 1 Ton06 = 1.5 Ton08 = 2 Ton12 = 3 Ton16 = 4 Ton20 = 5 TonAvailable Model NumbersFSFCA-04-1-UFSFCA-06-1-UFSFCA-08-1-UFSFCA-12-1-UFSFCA-16-1-UFSFCA-20-1-U373

HVAC Guide SpecificationsDirect Expansion Universal Mount Fan CoilNominal Size:12,000 – 60,000 BTUHMultiaqua Model Number:FSFCA-04-1-UFSFCA-06-1-UFSFCA-08-1-UFSFCA-12-1-UFSFCA-16-1-UFSFCA-20-1-UPart 1-General1.01 System DescriptionMultiaqua direct expansion fan coils are manufactured with galvanized steel and high impact molded polymers.1.02 Quality AssuranceA. Certified in accordance with U.L. Standard 95, latest version (U.S.A.)B. Manufactured in a facility registered to ISO 9002, Manufacturing Quality Standard.C. Fully load tested at the factory.D. Damage resistant packaging.1.03 Delivery, Storage and HandlingA. Packaged and readied for shipment from the factory.B. Controls shall be capable of withstanding 150°F storage temperatures in the control compartment.C. Stored and handled per manufacturer’s recommendations.Part 2-Product2.01 EquipmentA. General:1. Unit shall be a factory assembled and tested direct expansion fan coil.2. Shall be assembled with high quality.3. Contained with the unit shall be all factory wiring, piping, associated controls and specialaccessories required prior to start up.B. Unit Cabinet:1. Composed of high impact polymers.2. Shall be internally insulated to insure quiet operation.C. Fan Motors:1. Shall be available in 208/230-1-50/60 vac.1. Fan motors shall be three speed, direct drive, and PSC type.2. Totally enclosed.3. Internal overload protected.4. Unit shall contain a swing motor to modulate the discharge air.D. Blower Wheels:1. Blower wheels are tangential and dynamically balanced.E. DX Coil:1. Coils manufactured with 3/8” rifled copper tubing mechanically bonded to aluminum fins.2. Coils shall be factory tested to 350 psig.F. Drain Pan:1. All drain pans shall be coated on both the interior and exterior with baked polyester powder toresist corrosion.2. The exterior of all drain pans shall be insulated with closed cell to prevent condensation.3. Pans shall contain a drain tubing that is accessible from the back, bottom and side of the unit.374

G. Filters:1. Unit shall contain 65% washable filters.Part 3-Controls and Safeties3.01 ControlsA. Fan coils shall be completely factory wired and tested.B. Unit shall include a terminal block that is capable of incorporating a 24 vac thermostat.C. Controls shall be capable of incorporating an optional hard-wired thermostat.3.02 Safeties:A. Fan coil shall contain a non reusable fuse on the secondary voltage side of the transformer.Part 4-Operating Characteristics:4.01 Electrical RequirementsA. Electrical shall include a terminal block.B. Electrical power supply shall be rated to withstand 120°F operating ambient temperatures.375

FSFCA Product Specifications & CapacityModel NumberHeight(in)Width(in)Depth(in)Physical DataWeight(lbs)CoilRowsFPICopperDiameter(in)LiquidLine(in)SuctionLine(in)FSFCA-04-1-U 25.72 38.32 9.20 88.00 2-13 3/8 3/8 1/2 1/2FSFCA-06-1-U 25.72 38.32 9.20 90.20 3-13 3/8 3/8 5/8 1/2FSFCA-08-1-U 25.72 38.32 9.20 96.80 4-13 3/8 3/8 5/8 1/2FSFCA-12-1-U 25.72 62.32 9.20 143.00 3-13 3/8 3/8 5/8 1/2FSFCA-16-1-U 25.72 74.32 9.20 154.00 3-14 3/8 3/8 3/4 1/2FSFCA-20-1-U 25.72 74.32 9.20 156.20 4-14 3/8 3/8 3/4 1/2Model NumberHiSpeedCFMVolts/Phase/HertzElectrical DataMotor HPFull LoadAmpacityFuse or HACRCircuit Breaker PerCircuitMinimumAmpsMaximumAmpsFSFCA-04-1-U 400 1/15 0.54 .68 2FSFCA-06-1-U 500 1/15 0.54 .68 2FSFCA-08-1-U 550 1/8 1.59 1.99 3FSFCA-12-1-U 750 1/8 & 1/20 2.09 2.49 4FSFCA-16-1-U 1150 1/8 x 2 3.18 3.58 5FSFCA-20-1-U 12001/8 x 2 3.18 3.58 5208/230-1-50/60Drain(in)Performance DataModel NumberCFMNominalCoolingCapacityFSFCA-04-1-U 400 12,000FSFCA-06-1-U 500 18,000FSFCA-08-1-U 550 24,000FSFCA-12-1-U 750 36,000FSFCA-16-1-U 1150 48,000FSFCA-20-1-U 1200 60,000These specifications are subject to change without notice.376

377

INSTALLATION & OPERATINGMANUALFSFCA Universal Mount Fan Coils12,000-60,000 BTUH-------------------------------------- CAUTION --------------------------------------Care must be taken when handling sheet metal. Sheet metal parts have sharp edges and couldcause injury.GENERALRead the entire contents of this manualbefore beginning installation. Multiaquaassumes no responsibility for equipmentinstalled contradictory to any coderequirement or installation instructions.The components of this fan coil havebeen inspected at the factory and readiedfor shipment. Upon receiving theshipment a visual inspection of thepackaging must be performed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found a damageclaim must be filed by the receiving partyagainst the delivery party immediately.This product is designed andmanufactured to permit installation inaccordance with national codes. It is theinstaller’s responsibility to install theproduct in accordance with nationalcodes and/or prevailing local codes andregulations.Care must be taken to ensure thestructural integrity of the supportingmembers, clearances and provisions forservicing, power supply, coil connectionsand/or condensate removal. Before theinstallation ensure the structural strengthof the supporting members is sufficient.See figure 1 for hanging weights of thefan coils.This unit is designed to be installed in ahorizontal or vertical configuration. Fan coilcan be mounted on a wall or ceiling. Seefigure 2 for fan coil and mounting bracketdimensions.FAN COIL APPROXIMATEDMODEL NUMBER WEIGHTS (lbs)FSFCA-04-1-U 88.00FSFCA-06-1-U 90.20FSFCA-08-1-U 96.80FSFCA-12-1-U 143.00FSFCA-16-1-U 154.00FSFCA-20-1-U 256.20Figure 1378

INSTALLATION & OPERATINGMANUALFSFCA Universal Mount Fan Coil12,000-60,000 BTUHFSFCA Mounting Bracket Dimensions(in)Model Number A BFSFCA-04-1-U 36.49 13.00FSFCA-06-1-U 36.49 13.00FSFCA-08-1-U 36.49 13.00FSFCA-12-1-U 48.30 13.00FSFCA-16-1-U 71.97 13.00FSFCA-20-1-U 71.97 13.00ABACKB typFigure 2379

INSTALLATION & OPERATINGMANUALFSFCA Universal Mount Fan Coils12,000 – 60,000 BTUH-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORINSTALLING THE MOUNTINGBRACKETS AND UNIT1. The unit should be installed forhorizontal and vertical dischargeapplications only.Figure 32. Select position for unit and definedirection of DX piping, drain andelectrical wiring. Access to the above canbe obtained from the right hand sidebottom, back and side. See page 355 foraccess dimensions.Figure 3, 4 and 53. Remove mounting brackets from bothsides of unit.Figure 4Figure 64. Prepare mounting bolts for mountingunit under ceiling or on a wall at thedistance provided in figure 2.5. Select a location that permits even airflow throughoput the room.6. Select a location that has enoughservice space when the unit is mountedunder the ceiling or on the wallFigure 5380

INSTALLATION & OPERATINGMANUALFSFCA Universal Mount Fan Coils12,000 – 60,000 BTUHPiping Locations381

INSTALLATION & OPERATINGMANUALFSFCA Universal Mount Fan Coils12,000 – 60,000 BTUH-------- CAUTION -------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.INSTRUCTIONS FORINSTALLING THE MOUNTINGBRACKETS AND UNIT7. Carefully place fan coil into place andalign mounting holes in fan coil to theholes in the mounting bracket. Typicalboth sides.Figure 6Figure 68. Connections to the indoor unit areflared connections for both the liquid andsuction lines to the fan coil.Figure 79. Ensure tubing and fittings are in linewith another before tightening nut toallow concentric seating of tube ontoflare nut as to prevent leakage.Figure 710. If installing a TXV at the condenser,ensure that the liquid line is properlyinsulated.11. Connect the field drain line to theclear drain tubing provided on the drainpan of the fan coil. Ensure the drain linehas a ¼” of fall per foot. Insulate thecondensate drain line to preventsweating.Figure 8382

FSFCA-xx-1-U Wiring Diagram208/230/-1-50/60383

FSFCA CERTIFIED DRAWING384

20 Gallon Liquid Solution Storage TankMA X SHIPPING DIMENSIONS (in)MODEL # GALLONS(psig) WEIGHT A B CWX202H 20 75 34 lbs 15 3/8 31 5/8 13 5/8These specifications are subject to change without notice.385

42 Gallon Liquid Solution Storage TankDIMENSIONS (in)MODEL # GA LLONSMA X SHIPPING(psig) WEIGHT A B CWX422H 42 75 59 lbs 20 36 17.8These specifications are subject to change without notice.386

Expansion Tank and Air-PurgeThe FILL-TROL unit is a combination air purge andpressurized expansion tank. The tank is prepressurized,diaphragm-type with 12 (psig) air charge.MODEL # GALLONSMA X SHIPPING(psig) WeightDIMENSIONS (in)HEIGHTDIA METER1500/1 2 100 6 12.5 8.0These specifications are subject to change without notice.387

Bypass Control ValveThe Honeywell bypass valve controls liquid solutionsystem pressure. It Installs between the supply and returnlines without the need of electrical hookup. Desiredpressure is controlled by turning the regulating handle. Thedifferential pressure indicator shows the pump headavailable to the system.ModelTemperature Pressure CapacitiesSizeNumberRating Rating Max GPMD146M1032 3/4" FNPT 230° 85 psi 18D146M1040 1 1/4" FNPT 230° 85 psi 50These specifications are subject to change without notice.388

2-Way Motorized Zone ValvesThe Honeywell “PowerTrack” motorized zone valves areavailable in 2-way configuration only. They are availablewith inlet and outlet sizes of .5”, .75” & 1” FNPT. Eachzone valve has an internal auxiliary switch.ModelTemperature Pressure Max. Shut-offSizeNumberRating Rating PressureCVMZV524E-T .5" FNPT 240° 125 psi 20 psi 5.8MZV525E-T .75" FNPT 240° 125 psi 20 psi 5.8MZV526E-T 1" FNPT 240° 125 psi 17.5 psi 7These specifications are subject to change without notice.389

3-Way Motorized Zone ValvesThe Erie “Pop Top” motorized zone valves are available in3-way configuration only. They are available with inlet andoutlet sizes of .5” & .75” sweat.Model Temp Pressure Max. Shut-offSizeNumber Rating Rating PressureCVVT3212G13A020 .5" Sweat 200° 125 psi 40 psi 3.0VT3315G13A020 .75" Sweat 200° 125 psi 40 psi 3.0These specifications are subject to change without notice.390

Condensate PumpThe Sauermann condensate pump consists of a pump unitand a remote detection unit fitted with a 3 level float(on/off/alarm).The alarm contact (N/C) automatically cuts off thecondensing unit control voltage or a solenoid valve.Thermal protection 194° F on the pump coil.ModelMax Max Max DischargeVoltageNumberFlow Suction (hd) (hd)S13100-SIUS23 208/230/-1 2.64 gpm 9.84 19.69 hdThese specifications are subject to change without notice.391

Multiaqua ThermostatThe Multiaqua thermostat is designed to be used with theMHCCW, MHNCCW and MCCW, line of ceilingconcealed fan coils. This thermostat will control thetemperature as well as the fan speed(s).ModelNumberVoltage W idth HeightRAB30 24 VAC 3.80 (in) 4.45 (in)These specifications are subject to change without notice.392

Erie Line Voltage ThermostatThe Erie line voltage thermostat is designed to be used withthe MHCCW, MHNCCW and MCCW line of ceilingconcealed fan coils. This thermostat will control thetemperature as well as the fan speed(s).ModelNumberVoltage Width HeightT513 120/208-230 3.25 (in) 5.25 (in)These specifications are subject to change without notice.393

Wireless ThermostatThe wireless 24vac thermostat is designed to be used withthe CFFWA & FSFCA WITH “U” control option,CWA2/CWA4 and the line of ceiling concealed fan coilswith limited fan wiring changes. This wall mountedthermostat comes with a remote control that will control theup/down of the temperature as well as on/off functions.ModelNumberVoltage Width HeightAR7821 24 vac 5.5 (in) 3.75 (in)These specifications are subject to change without notice.394

Wye StrainerThe brass Wye Strainer is constructed of solid brass andcomes with each chiller. Also included is a 1.25” x 3” brassnipple. The Wye Strainer is to be installed in the liquidsolution return line.ConstructionInlet/Outlet LengthFNPT FNPTBrass 1.25 (in) 5.00 (in)These specifications are subject to change without notice.395

Circulating PumpsThe Gould MCS Series are end suctioncentrifugal pumps. The liquid solution handlingparts are constructed out of AISI 304 and 316Lstainless steel for corrosion resistance. Thecasing is stainless steel construction with NPTthreaded connections. The casing also containseasily accessible vent, prime and drainconnections with stainless steel plugs.The motor is open drip proof and has a totallyenclosed fan cooled enclosure. Rugged ballbearing design for continuous duty under alloperating conditions.120/208/230/-1-60 MaxModelHPAmpsNumber120 vac 208 2301MS1E4CO 1 15 8.3 7.51MS1F4BO 1.5 20 11 101MS1G4AO 2 22.8 11.7 11.4208/230/460-3-60ModelHPAmpsNumber208 vac 230 vac 460 vac1MS1E5CO 1 4.2 4 21MS1F5BO 1.5 5.6 5.2 2.61MS1G2AO 2 6.8 6.6 3.3PressureRating75 psiThese specifications are subject to change without notice.396

Pump Model Numbers:1MS1E4CO, 1MS1F4BO, 1MS1G4AO, 1MS1E5CO, 1MS1F5BO, 1MS1G2AOThese specifications are subject to change without notice.397

Circulating PumpsThe American Stainless Pumps are end suctioncentrifugal pumps. The liquid solution handlingparts are constructed out of AISI 304 and 316Lstainless steel for corrosion resistance. Thecasing is stainless steel construction with NPTthreaded connections. The casing also containsan easily accessible stainless steel drain plug.The motor is open drip proof and has a totallyenclosed fan cooled enclosure. Rugged ballbearings design for continuous duty under alloperating conditions.120/208/230/-1-60 MaxModelHPAmpsPressureNumber120 vac 208 230 RatingSSP-1 0.5 7.4 3.7 3.5208/230/460-3-60ModelHPAmps75 psiNumber208 vac 230 vac 460 vacSSP-2 0.5 2 1.8 0.9These specifications are subject to change without notice.398

Pump Model Numbers:SSP-1 & SSP-2These specifications are subject to change without notice.399

ASSEMBLY & INSTALLATIONINSTRUCTIONSMPE468 (L/NL), MPE10 (L/NL), MPE12 (L/NL)CEILING CONCEALED FAN COIL ENCLOSURE400

MPE468(L/NL), MPE10(L/NL), MPE12(L/NL)Enclosure Assembly InstructionsCeiling Concealed Fan Coils 1- 3 TonsThis product is designed and manufactured to permit installation in accordance with National Codes. Itis the installer’s responsibility to install the product in accordance with National Codes and / orprevailing local codes and regulations. Multiaqua assumes no responsibility for equipment installationcontrary to any code requirement or installation instructions.Pre-Assembly Checklist(1) Left & Right Hand Panel (2) Front Discharge Panel (3) Top/Back Panel (4) Hinged Service Access Door------- CAUTION --------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.GENERALRead the entire contents of thismanual before beginning assemblyThe components of this enclosurehave been inspected at the factoryand readied for shipment. Uponreceiving the shipment a visualinspection of the packaging must beperformed.If any damage to the packaging isdiscovered, an inspection of thecomponents must be performed andnoted on the delivery documents. Ifcomponent damage is found adamage claim must be filed by thereceiving party against the deliveryparty immediately.(1) Left and Right Side Panels(2) Front Discharge PanelFor approximate hanging weights(3) Top/Back Panel (4) Hinged Service Access Panelrefer to“figure 11.“OPTIONAL”401

MPE468(L/NL), MPE10(L/NL), MPE12(L/NL)Enclosure Assembly InstructionsCeiling Concealed Fan Coils 1- 3 Tons-------- CAUTION --------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.GENERALFilters are not provided with theunit or enclosure and must beprovided by the installingcontractor. Refer to figure 12 forrecommended filter sizes. Forenclosure part numbers anddimensions refer to figure 13. Forservice access panel dimensionsrefer to figure 14. All screws andbolts for assembly are provided.Figure 1ENCLOSURE ASSEMBLY1. Position the top/back panel on asmooth, flat surface with theinsulation side of panel facingupward.Figure 1.2. Fold up the short end (backpanel) of the top/back panel toallow for the assembly of the twoside panels.Figure 2.3. Attach the short end of the eachside panel by attaching it to thefolded up back panel with twoscrews on each panel. Ensure thatthe arrow on both side panels isfacing away from the folded upback panel.Figure 3.Figure 2Figure 3402

MPE468(L/NL), MPE10(L/NL), MPE12(L/NL)Enclosure Assembly InstructionsCeiling Concealed Fan Coils 1- 3 Tons------- CAUTION --------Care must be taken whenhandling sheet metal. Sheetmetal parts have sharp edgesand could cause injury.ENCLOSURE ASSEMBLY4. Rotate the enclosure onto theback panel in order to attach thefront discharge panel.Figure 4.Figure 45. Position the front dischargepanel on top of the two sidepanels and attach with two screwsper side. Ensure that the dischargepanel opening is closer to the toppanel.Figure 56. Fold the top panel and secureit to the two side panels usingthree screws per side and to thefront discharge panel using fourscrews.Figure 6Figure 5Figure 6403

MPE468(L/NL), MPE10(L/NL), MPE12(L/NL)Enclosure Assembly InstructionsCeiling Concealed Fan Coils 1- 3 Tons-----------------CAUTION------------------These units are designed to be installed in ahorizontal configuration only. Care must betaken to ensure of the structural integrity of thesupporting members, clearances and provisionsfor servicing, power supply, coil connectionsand drain facilitation.ENCLOSUREINSTALLATION7. Cut away insulation from theinside of the top panel to allowthe installation of the fan coilmounting bolts.Figure 7 & 88. From the inside of the toppanel, insert two mounting bolts(hex head first) into each side ofthe mounting track. Ensure thateach bolt moves freely in bothdirections.Figure 89. Locate the four mountingholes on the top panel of theenclosure. Raise the enclosure tothe selected mounting area andsecure with an adequate mountingmethod. Ensure that the enclosureis level in both directions to allowfor proper condensate removaland/or operation.Figure 9OutsideFigure 7InsideFigure 8Mounting Means2 per sideFigure 9404

MPE468(L/NL), MPE10(L/NL), MPE12(L/NL)Enclosure Assembly InstructionsCeiling Concealed Fan Coils 1- 3 Tons------------------CAUTION-----------------These units are designed to be installed in ahorizontal configuration only. Care must betaken to ensure of the structural integrity of thesupporting members, clearances and provisionsfor servicing, power supply, coil connectionsand drain facilitation.------------------ CAUTION ----------------Care must be taken when handling sheet metal.Sheet metal parts have sharp edges and couldcause injury.SUPPLY AND RETURN AIR CONNECTIONS10. The fan coil enclosure assembly has a supply air duct flange to allow the attachment of ductwork.Ensure when attaching ductwork to the flange, that the screws are at least one and half inches away fromthe front of the enclosure. This is to allow proper insertion of the fan coil assembly into the enclosureassembly. When mounting the service access panel, louvered or non-louvered, the installing contractormust provide a frame in order to connect the enclosure assembly to the service access panel. This isrequired to obtain an airtight seal for the return air. Ensure that the material used for the frame adheres tonational codes and/or local codes and regulations. Care must be taken when installing the service accesspanel to ensure the opening of the hinged service panel.Figure 10Fan Coil Mounting BoltsTypical All Four CornersFan Coil EnclosureSupply Duct FlangeOptional Return AirCutoutFrame EnclosureSupplied By OthersCeilingHinged Service Access PanelReturn AirPanel Mounting Screw ( TYP)Figure 10405

MPE468(L/NL), MPE10(L/NL), MPE12(L/NL)Enclosure Assembly InstructionsCeiling Cocealed Fan Coils 1- 3 Tons--------------CAUTION---------------These units are designed to be installed ina horizontal configuration only. Care mustbe taken to ensure of the structuralintegrity of the supporting members,clearances and provisions for servicing,power supply, coil connections and drainfacilitation.------------------ CAUTION ------------------Care must be taken when handling sheet metal. Sheetmetal parts have sharp edges and could cause injury.FAN COIL APPROXIMATED WEIGHTSMODELNUMBER (KG) (LBS)MHCCW(X)04 30.00 66.0MHCCW(X)06 31.00 68.2MHCCW(X)08 33.00 72.6MHCCW(X)10 34.00 74.8MHCCW(X)12 38.00 83.6ENCLOSUREFAN COIL Dimensions inPART NUMBERSIZEDepthLength HeightMPE468 4 32.75 39.75 11.00MPE468 6 32.75 39.75 11.00MPE468 8 32.75 39.75 11.00MPE10 10 32.75 45.75 11.00MPE12 12 32.75 51.75 11.00Figure 11 Figure 13FAN COIL RECOMMENDED FILTER SIZESMODELNUMBER Width (in) Length (in)MHCCW(X)04 18 36MHCCW(X)06 18 36MHCCW(X)08 18 36MHCCW(X)10 18 36MHCCW(X)12 2 qty 18 24Figure 12LOUVERED & NON-LOUVEREDSERVICE ACCESS PANELPANEL MODEL FAN COIL LENGTH WIDTHNUMBER SIZE (in) (in)MAP468L (NL) 4 43.25 27.5MAP468L (NL) 6 43.25 27.5MAP468L (NL) 8 43.25 27.5MAP10L (NL) 10 49.25 27.5MAP12L (NL) 12 55.25 27.5Figure 14406

Sample Piping ConfigurationsThese specifications are subject to change without notice.407

Banked Chiller ConfigurationThese specifications are subject to change without notice.408

LIMITED WARRANTY INFORMATION AND REGISTRATIONThis warranty is extended by Multiaqua, Inc. (hereafter referred to as MAI) to the final purchaser.MAI warrants its products to be free of defects in materials and workmanship at the time of originalpurchase and for subsequent periods of time as described below.Multiaqua MAC & MACH Chiller parts are warranted to be free from manufacturing defects for upto 12 months from the date of installation.• The compressor is warranted for 5 years from the date of installation.• The heat exchanger is warranted for 5 years from the date of installationMultiaqua MHCCW, MHNCCW, MCCW, MHWW, CFFWA, CWA2, CWA4, MHCCX,MHNCCX, MCCX, FSFCA and MHWX fan coil parts are warranted to be free from manufacturingdefects for up to 12 months from the date of installation.Multiaqua accessories-valves, storage tanks, expansion tank, pumps, control valves, bypass valve,wye strainer, condensate pump, thermostats and controls are warranted to be free frommanufacturing defects for up to 12 months from the date of installation.If during the period of warranty, the products listed prove defective under normal use and servicedue to improper materials workmanship as determined by MAI, the company will at its solediscretion, repair or replace the defective part or component.Conditions• In the event MAI repairs or replaces a part or component, the repaired or replaced product shall bewarranted under the original limited warranty for the remainder of the original warranty period.• The warranty does not cover any failure of components not supplied by MAI, nor does it coverfailure of any part due to misuse (including neglect, improper installation, repair alteration,modification or adjustment).• Damage caused by freezing, corrosion and fouling is not covered under this warranty.• There are no other express warranties, whether written or oral other than this printed limitedwarranty. All implied warranties, including without limitation the implied or merchantability orfitness for a particular purpose, are limited to the duration of this limited warranty. In no way shallthe company be liable for incidental or consequential damages of any nature whatsoever, includingbut not limited to lost profits or commercial loss, to the full extent those damages can be disclaimedby law.

Chilled Water Air Conditioning SystemsTHINK WATER!Multiaqua, Inc.306 Hagood StreetEasley, SC. 29640Phone (864) 850-8990Fax (864) 850-8995www.multiaqua.com

Multiaqua Catalog Full Catalog - API of NH

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